+++ /dev/null
-From 833fbbe448fca5f7047708db2d0d91778aabbb93 Mon Sep 17 00:00:00 2001
-From: Marc Kleine-Budde <mkl@pengutronix.de>
-Date: Wed, 30 May 2018 16:31:59 +0200
-Subject: [PATCH 2/3] networkd-link: link_up_can(): move function upwards
-
-This patch is a preparation patch, to avoid forward declarations in the
-next patch.
----
- src/network/networkd-link.c | 50 ++++++++++++++++++-------------------
- 1 file changed, 25 insertions(+), 25 deletions(-)
-
-diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
-index c29ae30ef0..a736dc1a74 100644
---- a/src/network/networkd-link.c
-+++ b/src/network/networkd-link.c
-@@ -1780,6 +1780,31 @@ int link_up(Link *link) {
- return 0;
- }
-
-+static int link_up_can(Link *link) {
-+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
-+ int r;
-+
-+ assert(link);
-+
-+ log_link_debug(link, "Bringing CAN link up");
-+
-+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
-+
-+ r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not set link flags: %m");
-+
-+ r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
-+
-+ link_ref(link);
-+
-+ return 0;
-+}
-+
- static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
- int r;
-@@ -1824,31 +1849,6 @@ int link_down(Link *link) {
- return 0;
- }
-
--static int link_up_can(Link *link) {
-- _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
-- int r;
--
-- assert(link);
--
-- log_link_debug(link, "Bringing CAN link up");
--
-- r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);
-- if (r < 0)
-- return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
--
-- r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
-- if (r < 0)
-- return log_link_error_errno(link, r, "Could not set link flags: %m");
--
-- r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL);
-- if (r < 0)
-- return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
--
-- link_ref(link);
--
-- return 0;
--}
--
- static int link_handle_bound_to_list(Link *link) {
- Link *l;
- Iterator i;
---
-2.17.1
-
+++ /dev/null
-From c855f0b6042516632e4ad2020f8576de54366593 Mon Sep 17 00:00:00 2001
-From: Hiram van Paassen <hiram.van.paassen@mastervolt.com>
-Date: Tue, 10 Apr 2018 17:26:20 +0200
-Subject: [PATCH 3/3] networkd-link: add support to configure CAN interfaces
-
-This patch adds support for kind "can". Fixes: #4042.
----
- man/systemd.network.xml | 33 ++++++
- src/libsystemd/sd-netlink/netlink-types.c | 10 ++
- src/libsystemd/sd-netlink/netlink-types.h | 1 +
- src/network/networkd-link.c | 122 +++++++++++++++++++++-
- src/network/networkd-network-gperf.gperf | 3 +
- src/network/networkd-network.c | 3 +-
- src/network/networkd-network.h | 5 +
- 7 files changed, 175 insertions(+), 2 deletions(-)
-
-diff --git a/man/systemd.network.xml b/man/systemd.network.xml
-index 6b83a5b851..99ef84ac3d 100644
---- a/man/systemd.network.xml
-+++ b/man/systemd.network.xml
-@@ -1361,6 +1361,32 @@
- </varlistentry>
- </variablelist>
- </refsect1>
-+
-+ <refsect1>
-+ <title>[CAN] Section Options</title>
-+ <para>The <literal>[CAN]</literal> section manages the Controller Area Network (CAN bus) and accepts the
-+ following keys.</para>
-+ <variablelist class='network-directives'>
-+ <varlistentry>
-+ <term><varname>BitRate=</varname></term>
-+ <listitem>
-+ <para>The bitrate of CAN device in bits per second. The usual SI prefixes (K, M) with the base of 1000 can
-+ be used here.</para>
-+ </listitem>
-+ </varlistentry>
-+ <varlistentry>
-+ <term><varname>RestartSec=</varname></term>
-+ <listitem>
-+ <para>Automatic restart delay time. If set to a non-zero value, a restart of the CAN controller will be
-+ triggered automatically in case of a bus-off condition after the specified delay time. Subsecond delays can
-+ be specified using decimals (e.g. <literal>0.1s</literal>) or a <literal>ms</literal> or
-+ <literal>us</literal> postfix. Using <literal>infinity</literal> or <literal>0</literal> will turn the
-+ automatic restart off. By default automatic restart is disabled.</para>
-+ </listitem>
-+ </varlistentry>
-+ </variablelist>
-+ </refsect1>
-+
- <refsect1>
- <title>[BridgeVLAN] Section Options</title>
- <para>The <literal>[BridgeVLAN]</literal> section manages the VLAN ID configuration of a bridge port and accepts
-diff --git a/src/libsystemd/sd-netlink/netlink-types.c b/src/libsystemd/sd-netlink/netlink-types.c
-index 923f7dd10c..978277a2b9 100644
---- a/src/libsystemd/sd-netlink/netlink-types.c
-+++ b/src/libsystemd/sd-netlink/netlink-types.c
-@@ -300,6 +300,11 @@ static const NLType rtnl_link_info_data_geneve_types[] = {
- [IFLA_GENEVE_LABEL] = { .type = NETLINK_TYPE_U32 },
- };
-
-+static const NLType rtnl_link_info_data_can_types[] = {
-+ [IFLA_CAN_BITTIMING] = { .size = sizeof(struct can_bittiming) },
-+ [IFLA_CAN_RESTART_MS] = { .type = NETLINK_TYPE_U32 },
-+};
-+
- /* these strings must match the .kind entries in the kernel */
- static const char* const nl_union_link_info_data_table[] = {
- [NL_UNION_LINK_INFO_DATA_BOND] = "bond",
-@@ -323,6 +328,7 @@ static const char* const nl_union_link_info_data_table[] = {
- [NL_UNION_LINK_INFO_DATA_VRF] = "vrf",
- [NL_UNION_LINK_INFO_DATA_VCAN] = "vcan",
- [NL_UNION_LINK_INFO_DATA_GENEVE] = "geneve",
-+ [NL_UNION_LINK_INFO_DATA_CAN] = "can",
- };
-
- DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData);
-@@ -366,6 +372,8 @@ static const NLTypeSystem rtnl_link_info_data_type_systems[] = {
- .types = rtnl_link_info_data_vrf_types },
- [NL_UNION_LINK_INFO_DATA_GENEVE] = { .count = ELEMENTSOF(rtnl_link_info_data_geneve_types),
- .types = rtnl_link_info_data_geneve_types },
-+ [NL_UNION_LINK_INFO_DATA_CAN] = { .count = ELEMENTSOF(rtnl_link_info_data_can_types),
-+ .types = rtnl_link_info_data_can_types },
- };
-
- static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
-diff --git a/src/libsystemd/sd-netlink/netlink-types.h b/src/libsystemd/sd-netlink/netlink-types.h
-index ae65c1d8e4..e7b8a292c2 100644
---- a/src/libsystemd/sd-netlink/netlink-types.h
-+++ b/src/libsystemd/sd-netlink/netlink-types.h
-@@ -89,6 +89,7 @@ typedef enum NLUnionLinkInfoData {
- NL_UNION_LINK_INFO_DATA_VRF,
- NL_UNION_LINK_INFO_DATA_VCAN,
- NL_UNION_LINK_INFO_DATA_GENEVE,
-+ NL_UNION_LINK_INFO_DATA_CAN,
- _NL_UNION_LINK_INFO_DATA_MAX,
- _NL_UNION_LINK_INFO_DATA_INVALID = -1
- } NLUnionLinkInfoData;
-diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
-index a736dc1a74..73602d60a7 100644
---- a/src/network/networkd-link.c
-+++ b/src/network/networkd-link.c
-@@ -19,6 +19,7 @@
-
- #include <netinet/ether.h>
- #include <linux/if.h>
-+#include <linux/can/netlink.h>
- #include <unistd.h>
-
- #include "alloc-util.h"
-@@ -1805,6 +1806,105 @@ static int link_up_can(Link *link) {
- return 0;
- }
-
-+static int link_set_can(Link *link) {
-+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
-+ int r;
-+
-+ assert(link);
-+ assert(link->network);
-+ assert(link->manager);
-+ assert(link->manager->rtnl);
-+
-+ log_link_debug(link, "link_set_can");
-+
-+ r = sd_rtnl_message_new_link(link->manager->rtnl, &m, RTM_NEWLINK, link->ifindex);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Failed to allocate netlink message: %m");
-+
-+ r = sd_netlink_message_set_flags(m, NLM_F_REQUEST | NLM_F_ACK);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not set netlink flags: %m");
-+
-+ r = sd_netlink_message_open_container(m, IFLA_LINKINFO);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Failed to open netlink container: %m");
-+
-+ r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, link->kind);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m");
-+
-+ if (link->network->can_bitrate > 0 || link->network->can_sample_point > 0) {
-+ struct can_bittiming bt = {
-+ .bitrate = link->network->can_bitrate,
-+ .sample_point = link->network->can_sample_point,
-+ };
-+
-+ if (link->network->can_bitrate > UINT32_MAX) {
-+ log_link_error(link, "bitrate (%zu) too big.", link->network->can_bitrate);
-+ return -ERANGE;
-+ }
-+
-+ log_link_debug(link, "Setting bitrate = %d bit/s", bt.bitrate);
-+ if (link->network->can_sample_point > 0)
-+ log_link_debug(link, "Setting sample point = %d.%d%%", bt.sample_point / 10, bt.sample_point % 10);
-+ else
-+ log_link_debug(link, "Using default sample point");
-+
-+ r = sd_netlink_message_append_data(m, IFLA_CAN_BITTIMING, &bt, sizeof(bt));
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not append IFLA_CAN_BITTIMING attribute: %m");
-+ }
-+
-+ if (link->network->can_restart_us > 0) {
-+ char time_string[FORMAT_TIMESPAN_MAX];
-+ uint64_t restart_ms;
-+
-+ if (link->network->can_restart_us == USEC_INFINITY)
-+ restart_ms = 0;
-+ else
-+ restart_ms = DIV_ROUND_UP(link->network->can_restart_us, USEC_PER_MSEC);
-+
-+ format_timespan(time_string, FORMAT_TIMESPAN_MAX, restart_ms * 1000, MSEC_PER_SEC);
-+
-+ if (restart_ms > UINT32_MAX) {
-+ log_link_error(link, "restart timeout (%s) too big.", time_string);
-+ return -ERANGE;
-+ }
-+
-+ log_link_debug(link, "Setting restart = %s", time_string);
-+
-+ r = sd_netlink_message_append_u32(m, IFLA_CAN_RESTART_MS, restart_ms);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not append IFLA_CAN_RESTART_MS attribute: %m");
-+ }
-+
-+ r = sd_netlink_message_close_container(m);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Failed to close netlink container: %m");
-+
-+ r = sd_netlink_message_close_container(m);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Failed to close netlink container: %m");
-+
-+ r = sd_netlink_call_async(link->manager->rtnl, m, link_set_handler, link, 0, NULL);
-+ if (r < 0)
-+ return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
-+
-+ link_ref(link);
-+
-+ if (!(link->flags & IFF_UP)) {
-+ r = link_up_can(link);
-+ if (r < 0) {
-+ link_enter_failed(link);
-+ return r;
-+ }
-+ }
-+
-+ log_link_debug(link, "link_set_can done");
-+
-+ return r;
-+}
-+
- static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
- int r;
-@@ -1818,6 +1918,11 @@ static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *user
- if (r < 0)
- log_link_warning_errno(link, r, "Could not bring down interface: %m");
-
-+ if (streq_ptr(link->kind, "can")) {
-+ link_ref(link);
-+ link_set_can(link);
-+ }
-+
- return 1;
- }
-
-@@ -2512,6 +2617,21 @@ static int link_update_lldp(Link *link) {
- static int link_configure_can(Link *link) {
- int r;
-
-+ if (streq_ptr(link->kind, "can")) {
-+ /* The CAN interface must be down to configure bitrate, etc... */
-+ if ((link->flags & IFF_UP)) {
-+ r = link_down(link);
-+ if (r < 0) {
-+ link_enter_failed(link);
-+ return r;
-+ }
-+
-+ return 0;
-+ }
-+
-+ return link_set_can(link);
-+ }
-+
- if (!(link->flags & IFF_UP)) {
- r = link_up_can(link);
- if (r < 0) {
-@@ -2530,7 +2650,7 @@ static int link_configure(Link *link) {
- assert(link->network);
- assert(link->state == LINK_STATE_PENDING);
-
-- if (streq_ptr(link->kind, "vcan"))
-+ if (STRPTR_IN_SET(link->kind, "can", "vcan"))
- return link_configure_can(link);
-
- /* Drop foreign config, but ignore loopback or critical devices.
-diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
-index a2d38501a5..95301f16e3 100644
---- a/src/network/networkd-network-gperf.gperf
-+++ b/src/network/networkd-network-gperf.gperf
-@@ -147,6 +147,8 @@ IPv6Prefix.OnLink, config_parse_prefix_flags,
- IPv6Prefix.AddressAutoconfiguration, config_parse_prefix_flags, 0, 0
- IPv6Prefix.ValidLifetimeSec, config_parse_prefix_lifetime, 0, 0
- IPv6Prefix.PreferredLifetimeSec, config_parse_prefix_lifetime, 0, 0
-+CAN.BitRate, config_parse_si_size, 0, offsetof(Network, can_bitrate)
-+CAN.RestartSec, config_parse_sec, 0, offsetof(Network, can_restart_us)
- /* backwards compatibility: do not add new entries to this section */
- Network.IPv4LL, config_parse_ipv4ll, 0, offsetof(Network, link_local)
- DHCPv4.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp_use_dns)
-diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
-index 6f2ae66d40..65684e7915 100644
---- a/src/network/networkd-network.c
-+++ b/src/network/networkd-network.c
-@@ -214,7 +214,8 @@ static int network_load_one(Manager *manager, const char *filename) {
- "BridgeFDB\0"
- "BridgeVLAN\0"
- "IPv6PrefixDelegation\0"
-- "IPv6Prefix\0",
-+ "IPv6Prefix\0"
-+ "CAN\0",
- config_item_perf_lookup, network_network_gperf_lookup,
- false, network);
- if (r < 0)
-diff --git a/src/network/networkd-network.h b/src/network/networkd-network.h
-index b31921947d..c4e1192cbe 100644
---- a/src/network/networkd-network.h
-+++ b/src/network/networkd-network.h
-@@ -179,6 +179,11 @@ struct Network {
- uint32_t br_vid_bitmap[BRIDGE_VLAN_BITMAP_LEN];
- uint32_t br_untagged_bitmap[BRIDGE_VLAN_BITMAP_LEN];
-
-+ /* CAN support */
-+ size_t can_bitrate;
-+ unsigned can_sample_point;
-+ usec_t can_restart_us;
-+
- AddressFamilyBoolean ip_forward;
- bool ip_masquerade;
-
---
-2.17.1
-
Code Review / AGL / meta-agl.git / commitdiff