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be3e4467d4
Author | SHA1 | Date |
---|---|---|
Tobias Bernard | be3e4467d4 | |
Lennart Poettering | ff2c2d0850 | |
Lennart Poettering | db8728a60c | |
Yu Watanabe | 2e048b14eb | |
Dan Streetman | 7db0544705 | |
Dan Streetman | 3e82152543 | |
Dan Streetman | fd372b1a68 | |
Dan Streetman | befd4b8b60 | |
Dan Streetman | 9dfc1a9339 | |
Dan Streetman | d236718c16 |
|
@ -56,7 +56,7 @@ components:
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|||
script can optionally create boot loader entries that carry an initial boot
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counter (the initial counter is configurable in `/etc/kernel/tries`).
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# Details
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## Details
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The boot counting data `systemd-boot` and `systemd-bless-boot.service`
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manage is stored in the name of the boot loader entries. If a boot loader entry
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|
@ -149,7 +149,7 @@ scenario the first 4 steps are the same as above:
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12. On the following boot (and all subsequent boots after that) the entry is
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now seen with boot counting turned off, no further renaming takes place.
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# How to adapt this scheme to other setups
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## How to adapt this scheme to other setups
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Of the stack described above many components may be replaced or augmented. Here
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are a couple of recommendations.
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|
@ -180,7 +180,7 @@ are a couple of recommendations.
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wrap them in a unit and order them after `boot-complete.target`, pulling it
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in.
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# FAQ
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## FAQ
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1. *Why do you use file renames to store the counter? Why not a regular file?*
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— Mainly two reasons: it's relatively likely that renames can be implemented
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|
|
|
@ -543,7 +543,7 @@ layout: default
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time you need that please immediately undefine `basename()`, and add a
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comment about it, so that no code ever ends up using the POSIX version!
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# Committing to git
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## Committing to git
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||||
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- Commit message subject lines should be prefixed with an appropriate component
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name of some kind. For example "journal: ", "nspawn: " and so on.
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|
|
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@ -69,7 +69,7 @@ Once you're done, create a git commit for the update of the `po/*.po` file you
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touched. Remember to undo the changes to the other `*.po` files (for instance,
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using `git checkout -- po/` after you commit the changes you do want to keep.)
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# Recompiling Translations
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## Recompiling Translations
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You can recompile the `*.po` files using the following command:
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|
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@ -54,32 +54,36 @@ int block_get_whole_disk(dev_t d, dev_t *ret) {
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return 1;
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}
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int get_block_device(const char *path, dev_t *dev) {
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int get_block_device(const char *path, dev_t *ret) {
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_cleanup_close_ int fd = -1;
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struct stat st;
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struct statfs sfs;
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int r;
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assert(path);
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assert(dev);
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assert(ret);
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/* Gets the block device directly backing a file system. If
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* the block device is encrypted, returns the device mapper
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* block device. */
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/* Gets the block device directly backing a file system. If the block device is encrypted, returns
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* the device mapper block device. */
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if (lstat(path, &st))
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fd = open(path, O_NOFOLLOW|O_CLOEXEC);
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if (fd < 0)
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return -errno;
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if (fstat(fd, &st))
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return -errno;
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if (major(st.st_dev) != 0) {
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*dev = st.st_dev;
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*ret = st.st_dev;
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return 1;
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}
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if (statfs(path, &sfs) < 0)
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return -errno;
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r = btrfs_get_block_device_fd(fd, ret);
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if (r > 0)
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return 1;
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if (r != -ENOTTY) /* not btrfs */
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return r;
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if (F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC))
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return btrfs_get_block_device(path, dev);
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*dev = 0;
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*ret = 0;
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return 0;
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}
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|
|
|
@ -1350,7 +1350,7 @@ int link_set_mtu(Link *link, uint32_t mtu) {
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if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) {
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log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as "
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"IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes: %m");
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"IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes");
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mtu = IPV6_MIN_MTU;
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}
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@ -2387,9 +2387,23 @@ static int link_set_ipv6_mtu(Link *link) {
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if (link->network->ipv6_mtu == 0)
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return 0;
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/* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes
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* on the interface. Bump up IPv6 MTU bytes to IPV6_MTU_MIN. */
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if (link->network->ipv6_mtu < IPV6_MIN_MTU) {
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log_link_notice(link, "Bumping IPv6 MTU to "STRINGIFY(IPV6_MIN_MTU)" byte minimum required");
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link->network->ipv6_mtu = IPV6_MIN_MTU;
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}
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r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu);
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m");
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if (r < 0) {
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if (link->mtu < link->network->ipv6_mtu)
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log_link_warning(link, "Cannot set IPv6 MTU %"PRIu32" higher than device MTU %"PRIu32,
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link->network->ipv6_mtu, link->mtu);
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else
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log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m");
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}
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link->ipv6_mtu_set = true;
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return 0;
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}
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@ -2696,10 +2710,6 @@ static int link_configure(Link *link) {
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if (r < 0)
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return r;
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r = link_set_ipv6_mtu(link);
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if (r < 0)
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return r;
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if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) {
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r = ipv4ll_configure(link);
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if (r < 0)
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@ -2776,6 +2786,12 @@ static int link_configure_after_setting_mtu(Link *link) {
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if (link->setting_mtu)
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return 0;
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/* The kernel resets ipv6 mtu after changing device mtu;
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* we must set this here, after we've set device mtu */
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r = link_set_ipv6_mtu(link);
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if (r < 0)
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return r;
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if (link_has_carrier(link) || link->network->configure_without_carrier) {
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r = link_acquire_conf(link);
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if (r < 0)
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@ -3484,11 +3500,30 @@ int link_carrier_reset(Link *link) {
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return 0;
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}
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/* This is called every time an interface admin state changes to up;
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* specifically, when IFF_UP flag changes from unset to set */
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static int link_admin_state_up(Link *link) {
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int r;
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/* We set the ipv6 mtu after the device mtu, but the kernel resets
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* ipv6 mtu on NETDEV_UP, so we need to reset it. The check for
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* ipv6_mtu_set prevents this from trying to set it too early before
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* the link->network has been setup; we only need to reset it
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* here if we've already set it during normal initialization. */
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if (link->ipv6_mtu_set) {
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r = link_set_ipv6_mtu(link);
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if (r < 0)
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return r;
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}
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return 0;
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}
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int link_update(Link *link, sd_netlink_message *m) {
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struct ether_addr mac;
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const char *ifname;
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uint32_t mtu;
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bool had_carrier, carrier_gained, carrier_lost;
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bool had_carrier, carrier_gained, carrier_lost, link_was_admin_up;
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int old_master, r;
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assert(link);
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@ -3618,12 +3653,22 @@ int link_update(Link *link, sd_netlink_message *m) {
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old_master = link->master_ifindex;
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(void) sd_netlink_message_read_u32(m, IFLA_MASTER, (uint32_t *) &link->master_ifindex);
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link_was_admin_up = link->flags & IFF_UP;
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had_carrier = link_has_carrier(link);
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r = link_update_flags(link, m, old_master != link->master_ifindex);
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if (r < 0)
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return r;
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if (!link_was_admin_up && (link->flags & IFF_UP)) {
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log_link_info(link, "Link UP");
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r = link_admin_state_up(link);
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if (r < 0)
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return r;
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} else if (link_was_admin_up && !(link->flags & IFF_UP))
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log_link_info(link, "Link DOWN");
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r = link_update_lldp(link);
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if (r < 0)
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return r;
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|
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@ -116,6 +116,7 @@ typedef struct Link {
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bool routing_policy_rules_configured:1;
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bool qdiscs_configured:1;
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bool setting_mtu:1;
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bool ipv6_mtu_set:1;
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LIST_HEAD(Address, pool_addresses);
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@ -0,0 +1,5 @@
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[Match]
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OriginalName=dummy98
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[Link]
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MTUBytes=1600
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@ -0,0 +1,4 @@
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[NetDev]
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Name=dummy98
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Kind=dummy
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MTUBytes=1600
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@ -0,0 +1,7 @@
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[Match]
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Name=dummy98
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[Network]
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IPv6AcceptRA=no
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Address=10.1.2.3/16
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Address=2001:db8:0:f101::15/64
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@ -0,0 +1,2 @@
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[Network]
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IPv6MTUBytes=1400
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@ -0,0 +1,2 @@
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[Network]
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IPv6MTUBytes=1550
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@ -0,0 +1,2 @@
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[Link]
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MTUBytes=1600
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@ -142,6 +142,8 @@ def setUpModule():
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running_units.append(u)
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drop_in = [
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'[Unit]',
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'StartLimitIntervalSec=0',
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'[Service]',
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'Restart=no',
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'ExecStart=',
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|
@ -216,8 +218,8 @@ def tearDownModule():
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for u in running_units:
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check_output(f'systemctl start {u}')
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def read_link_attr(link, dev, attribute):
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with open(os.path.join(os.path.join(os.path.join('/sys/class/net/', link), dev), attribute)) as f:
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def read_link_attr(*args):
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with open(os.path.join('/sys/class/net/', *args)) as f:
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return f.readline().strip()
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def read_bridge_port_attr(bridge, link, attribute):
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|
@ -267,14 +269,33 @@ def read_ipv4_sysctl_attr(link, attribute):
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with open(os.path.join(os.path.join(network_sysctl_ipv4_path, link), attribute)) as f:
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return f.readline().strip()
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def copy_unit_to_networkd_unit_path(*units):
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def copy_unit_to_networkd_unit_path(*units, dropins=True):
|
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"""Copy networkd unit files into the testbed.
|
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|
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Any networkd unit file type can be specified, as well as drop-in files.
|
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|
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By default, all drop-ins for a specified unit file are copied in;
|
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to avoid that specify dropins=False.
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|
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When a drop-in file is specified, its unit file is also copied in automatically.
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"""
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print()
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for unit in units:
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shutil.copy(os.path.join(networkd_ci_path, unit), network_unit_file_path)
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if (os.path.exists(os.path.join(networkd_ci_path, unit + '.d'))):
|
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if dropins and os.path.exists(os.path.join(networkd_ci_path, unit + '.d')):
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copytree(os.path.join(networkd_ci_path, unit + '.d'), os.path.join(network_unit_file_path, unit + '.d'))
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if unit.endswith('.conf'):
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dropin = unit
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dropindir = os.path.join(network_unit_file_path, os.path.dirname(dropin))
|
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os.makedirs(dropindir, exist_ok=True)
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shutil.copy(os.path.join(networkd_ci_path, dropin), dropindir)
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unit = os.path.dirname(dropin).rstrip('.d')
|
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shutil.copy(os.path.join(networkd_ci_path, unit), network_unit_file_path)
|
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|
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def remove_unit_from_networkd_path(units):
|
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"""Remove previously copied unit files from the testbed.
|
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|
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Drop-ins will be removed automatically.
|
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"""
|
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for unit in units:
|
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if (os.path.exists(os.path.join(network_unit_file_path, unit))):
|
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os.remove(os.path.join(network_unit_file_path, unit))
|
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|
@ -352,7 +373,7 @@ class Utilities():
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def check_operstate(self, link, expected, show_status=True, setup_state='configured'):
|
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self.assertRegex(get_operstate(link, show_status, setup_state), expected)
|
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|
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def wait_online(self, links_with_operstate, timeout='20s', bool_any=False, setup_state='configured'):
|
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def wait_online(self, links_with_operstate, timeout='20s', bool_any=False, setup_state='configured', setup_timeout=5):
|
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args = wait_online_cmd + [f'--timeout={timeout}'] + [f'--interface={link}' for link in links_with_operstate]
|
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if bool_any:
|
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args += ['--any']
|
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|
@ -363,13 +384,23 @@ class Utilities():
|
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output = check_output(*networkctl_cmd, 'status', link.split(':')[0], env=env)
|
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print(output)
|
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raise
|
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if not bool_any:
|
||||
for link in links_with_operstate:
|
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output = check_output(*networkctl_cmd, 'status', link.split(':')[0])
|
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print(output)
|
||||
for line in output.splitlines():
|
||||
if 'State:' in line:
|
||||
self.assertRegex(line, setup_state)
|
||||
if not bool_any and setup_state:
|
||||
# check at least once now, then once per sec for setup_timeout secs
|
||||
for secs in range(setup_timeout + 1):
|
||||
for link in links_with_operstate:
|
||||
output = check_output(*networkctl_cmd, 'status', link.split(':')[0])
|
||||
print(output)
|
||||
if not re.search(rf'(?m)^\s*State:.*({setup_state}).*$', output):
|
||||
# this link isn't in the right state; break into the sleep below
|
||||
break
|
||||
else:
|
||||
# all the links were in the right state; break to exit the timer loop
|
||||
break
|
||||
# don't bother sleeping if time is up
|
||||
if secs < setup_timeout:
|
||||
time.sleep(1)
|
||||
else:
|
||||
self.fail(f'link {link} state does not match {setup_state}')
|
||||
|
||||
def wait_address(self, link, address_regex, scope='global', ipv='', timeout_sec=100):
|
||||
for i in range(timeout_sec):
|
||||
|
@ -3304,6 +3335,101 @@ class NetworkdIPv6PrefixTests(unittest.TestCase, Utilities):
|
|||
print(output)
|
||||
self.assertRegex(output, '2001:db8:0:1::/64 proto ra')
|
||||
|
||||
class NetworkdMTUTests(unittest.TestCase, Utilities):
|
||||
links = ['dummy98']
|
||||
|
||||
units = [
|
||||
'12-dummy.netdev',
|
||||
'12-dummy-mtu.netdev',
|
||||
'12-dummy-mtu.link',
|
||||
'12-dummy.network',
|
||||
]
|
||||
|
||||
def setUp(self):
|
||||
remove_links(self.links)
|
||||
stop_networkd(show_logs=False)
|
||||
|
||||
def tearDown(self):
|
||||
remove_log_file()
|
||||
remove_links(self.links)
|
||||
remove_unit_from_networkd_path(self.units)
|
||||
stop_networkd(show_logs=True)
|
||||
|
||||
def check_mtu(self, mtu, ipv6_mtu=None, reset=True):
|
||||
if not ipv6_mtu:
|
||||
ipv6_mtu = mtu
|
||||
|
||||
# test normal start
|
||||
start_networkd()
|
||||
self.wait_online(['dummy98:routable'])
|
||||
self.assertEqual(read_ipv6_sysctl_attr('dummy98', 'mtu'), ipv6_mtu)
|
||||
self.assertEqual(read_link_attr('dummy98', 'mtu'), mtu)
|
||||
|
||||
# test normal restart
|
||||
restart_networkd()
|
||||
self.wait_online(['dummy98:routable'])
|
||||
self.assertEqual(read_ipv6_sysctl_attr('dummy98', 'mtu'), ipv6_mtu)
|
||||
self.assertEqual(read_link_attr('dummy98', 'mtu'), mtu)
|
||||
|
||||
if reset:
|
||||
self.reset_check_mtu(mtu, ipv6_mtu)
|
||||
|
||||
def reset_check_mtu(self, mtu, ipv6_mtu=None):
|
||||
''' test setting mtu/ipv6_mtu with interface already up '''
|
||||
stop_networkd()
|
||||
|
||||
# note - changing the device mtu resets the ipv6 mtu
|
||||
run('ip link set up mtu 1501 dev dummy98')
|
||||
run('ip link set up mtu 1500 dev dummy98')
|
||||
self.assertEqual(read_link_attr('dummy98', 'mtu'), '1500')
|
||||
self.assertEqual(read_ipv6_sysctl_attr('dummy98', 'mtu'), '1500')
|
||||
|
||||
self.check_mtu(mtu, ipv6_mtu, reset=False)
|
||||
|
||||
def test_mtu_network(self):
|
||||
copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/mtu.conf')
|
||||
self.check_mtu('1600')
|
||||
|
||||
def test_mtu_netdev(self):
|
||||
copy_unit_to_networkd_unit_path('12-dummy-mtu.netdev', '12-dummy.network', dropins=False)
|
||||
# note - MTU set by .netdev happens ONLY at device creation!
|
||||
self.check_mtu('1600', reset=False)
|
||||
|
||||
def test_mtu_link(self):
|
||||
copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy-mtu.link', '12-dummy.network', dropins=False)
|
||||
# must reload udev because it only picks up new files after 3 second delay
|
||||
call('udevadm control --reload')
|
||||
# note - MTU set by .link happens ONLY at udev processing of device 'add' uevent!
|
||||
self.check_mtu('1600', reset=False)
|
||||
|
||||
def test_ipv6_mtu(self):
|
||||
''' set ipv6 mtu without setting device mtu '''
|
||||
copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/ipv6-mtu-1400.conf')
|
||||
self.check_mtu('1500', '1400')
|
||||
|
||||
def test_ipv6_mtu_toolarge(self):
|
||||
''' try set ipv6 mtu over device mtu (it shouldn't work) '''
|
||||
copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/ipv6-mtu-1550.conf')
|
||||
self.check_mtu('1500', '1500')
|
||||
|
||||
def test_mtu_network_ipv6_mtu(self):
|
||||
''' set ipv6 mtu and set device mtu via network file '''
|
||||
copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/mtu.conf', '12-dummy.network.d/ipv6-mtu-1550.conf')
|
||||
self.check_mtu('1600', '1550')
|
||||
|
||||
def test_mtu_netdev_ipv6_mtu(self):
|
||||
''' set ipv6 mtu and set device mtu via netdev file '''
|
||||
copy_unit_to_networkd_unit_path('12-dummy-mtu.netdev', '12-dummy.network.d/ipv6-mtu-1550.conf')
|
||||
self.check_mtu('1600', '1550', reset=False)
|
||||
|
||||
def test_mtu_link_ipv6_mtu(self):
|
||||
''' set ipv6 mtu and set device mtu via link file '''
|
||||
copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy-mtu.link', '12-dummy.network.d/ipv6-mtu-1550.conf')
|
||||
# must reload udev because it only picks up new files after 3 second delay
|
||||
call('udevadm control --reload')
|
||||
self.check_mtu('1600', '1550', reset=False)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
parser = argparse.ArgumentParser()
|
||||
parser.add_argument('--build-dir', help='Path to build dir', dest='build_dir')
|
||||
|
|
Loading…
Reference in New Issue