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-rw-r--r--shared/nm-platform/nm-platform-utils.c1793
1 files changed, 1793 insertions, 0 deletions
diff --git a/shared/nm-platform/nm-platform-utils.c b/shared/nm-platform/nm-platform-utils.c
new file mode 100644
index 0000000000..59e4a24491
--- /dev/null
+++ b/shared/nm-platform/nm-platform-utils.c
@@ -0,0 +1,1793 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ */
+
+#include "nm-default.h"
+
+#include "nm-platform-utils.h"
+
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
+#include <linux/mii.h>
+#include <linux/if.h>
+#include <linux/version.h>
+#include <linux/rtnetlink.h>
+#include <fcntl.h>
+#include <libudev.h>
+
+#include "nm-base/nm-ethtool-base.h"
+#include "nm-log-core/nm-logging.h"
+
+/*****************************************************************************/
+
+#define ONOFF(bool_val) ((bool_val) ? "on" : "off")
+
+/******************************************************************************
+ * utils
+ *****************************************************************************/
+
+extern char *if_indextoname(unsigned __ifindex, char *__ifname);
+unsigned if_nametoindex(const char *__ifname);
+
+const char *
+nmp_utils_if_indextoname(int ifindex, char *out_ifname /*IFNAMSIZ*/)
+{
+ g_return_val_if_fail(ifindex > 0, NULL);
+ g_return_val_if_fail(out_ifname, NULL);
+
+ return if_indextoname(ifindex, out_ifname);
+}
+
+int
+nmp_utils_if_nametoindex(const char *ifname)
+{
+ g_return_val_if_fail(ifname, 0);
+
+ return if_nametoindex(ifname);
+}
+
+/*****************************************************************************/
+
+NM_UTILS_LOOKUP_STR_DEFINE(nm_platform_link_duplex_type_to_string,
+ NMPlatformLinkDuplexType,
+ NM_UTILS_LOOKUP_DEFAULT_WARN(NULL),
+ NM_UTILS_LOOKUP_STR_ITEM(NM_PLATFORM_LINK_DUPLEX_UNKNOWN, "unknown"),
+ NM_UTILS_LOOKUP_STR_ITEM(NM_PLATFORM_LINK_DUPLEX_FULL, "full"),
+ NM_UTILS_LOOKUP_STR_ITEM(NM_PLATFORM_LINK_DUPLEX_HALF, "half"), );
+
+/*****************************************************************************/
+
+typedef struct {
+ int fd;
+ const int ifindex;
+ char ifname[IFNAMSIZ];
+} SocketHandle;
+
+#define SOCKET_HANDLE_INIT(_ifindex) \
+ { \
+ .fd = -1, .ifindex = (_ifindex), \
+ }
+
+static void
+_nm_auto_socket_handle(SocketHandle *shandle)
+{
+ if (shandle->fd >= 0)
+ nm_close(shandle->fd);
+}
+
+#define nm_auto_socket_handle nm_auto(_nm_auto_socket_handle)
+
+/*****************************************************************************/
+
+typedef enum {
+ IOCTL_CALL_DATA_TYPE_NONE,
+ IOCTL_CALL_DATA_TYPE_IFRDATA,
+ IOCTL_CALL_DATA_TYPE_IFRU,
+} IoctlCallDataType;
+
+static int
+_ioctl_call(const char * log_ioctl_type,
+ const char * log_subtype,
+ unsigned long int ioctl_request,
+ int ifindex,
+ int * inout_fd,
+ char * inout_ifname,
+ IoctlCallDataType edata_type,
+ gpointer edata,
+ gsize edata_size,
+ struct ifreq * out_ifreq)
+{
+ nm_auto_close int fd_close = -1;
+ int fd;
+ int r;
+ gpointer edata_backup = NULL;
+ gs_free gpointer edata_backup_free = NULL;
+ guint try_count;
+ char known_ifnames[2][IFNAMSIZ];
+ const char * failure_reason = NULL;
+ struct ifreq ifr;
+
+ nm_assert(ifindex > 0);
+ nm_assert(NM_IN_SET(edata_type,
+ IOCTL_CALL_DATA_TYPE_NONE,
+ IOCTL_CALL_DATA_TYPE_IFRDATA,
+ IOCTL_CALL_DATA_TYPE_IFRU));
+ nm_assert(edata_type != IOCTL_CALL_DATA_TYPE_NONE || edata_size == 0);
+ nm_assert(edata_type != IOCTL_CALL_DATA_TYPE_IFRDATA || edata_size > 0);
+ nm_assert(edata_type != IOCTL_CALL_DATA_TYPE_IFRU
+ || (edata_size > 0 && edata_size <= sizeof(ifr.ifr_ifru)));
+ nm_assert(edata_size == 0 || edata);
+
+ /* open a file descriptor (or use the one provided). */
+ if (inout_fd && *inout_fd >= 0)
+ fd = *inout_fd;
+ else {
+ fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ r = -NM_ERRNO_NATIVE(errno);
+ failure_reason = "failed creating socket or ioctl";
+ goto out;
+ }
+ if (inout_fd)
+ *inout_fd = fd;
+ else
+ fd_close = fd;
+ }
+
+ /* resolve the ifindex to name (or use the one provided). */
+ if (inout_ifname && inout_ifname[0])
+ nm_utils_ifname_cpy(known_ifnames[0], inout_ifname);
+ else {
+ if (!nmp_utils_if_indextoname(ifindex, known_ifnames[0])) {
+ failure_reason = "cannot resolve ifindex";
+ r = -ENODEV;
+ goto out;
+ }
+ if (inout_ifname)
+ nm_utils_ifname_cpy(inout_ifname, known_ifnames[0]);
+ }
+
+ /* we might need to retry the request. Backup edata so that we can
+ * restore it on retry. */
+ if (edata_size > 0)
+ edata_backup = nm_memdup_maybe_a(500, edata, edata_size, &edata_backup_free);
+
+ try_count = 0;
+
+again:
+{
+ const char *ifname = known_ifnames[try_count % 2];
+
+ nm_assert(ifindex > 0);
+ nm_assert(ifname && nm_utils_ifname_valid_kernel(ifname, NULL));
+ nm_assert(fd >= 0);
+
+ memset(&ifr, 0, sizeof(ifr));
+ nm_utils_ifname_cpy(ifr.ifr_name, ifname);
+ if (edata_type == IOCTL_CALL_DATA_TYPE_IFRDATA)
+ ifr.ifr_data = edata;
+ else if (edata_type == IOCTL_CALL_DATA_TYPE_IFRU)
+ memcpy(&ifr.ifr_ifru, edata, NM_MIN(edata_size, sizeof(ifr.ifr_ifru)));
+
+ if (ioctl(fd, ioctl_request, &ifr) < 0) {
+ r = -NM_ERRNO_NATIVE(errno);
+ nm_log_trace(LOGD_PLATFORM,
+ "%s[%d]: %s, %s: failed: %s",
+ log_ioctl_type,
+ ifindex,
+ log_subtype,
+ ifname,
+ nm_strerror_native(-r));
+ } else {
+ r = 0;
+ nm_log_trace(LOGD_PLATFORM,
+ "%s[%d]: %s, %s: success",
+ log_ioctl_type,
+ ifindex,
+ log_subtype,
+ ifname);
+ }
+}
+
+ try_count++;
+
+ /* resolve the name again to see whether the ifindex still has the same name. */
+ if (!nmp_utils_if_indextoname(ifindex, known_ifnames[try_count % 2])) {
+ /* we could not find the ifindex again. Probably the device just got
+ * removed.
+ *
+ * In both cases we return the error code we got from ioctl above.
+ * Either it failed because the device was gone already or it still
+ * managed to complete the call. In both cases, the error code is good. */
+ failure_reason =
+ "cannot resolve ifindex after ioctl call. Probably the device was just removed";
+ goto out;
+ }
+
+ /* check whether the ifname changed in the meantime. If yes, would render the result
+ * invalid. Note that this cannot detect every race regarding renames, for example:
+ *
+ * - if_indextoname(#10) gives eth0
+ * - rename(#10) => eth0_tmp
+ * - rename(#11) => eth0
+ * - ioctl(eth0) (wrongly fetching #11, formerly eth1)
+ * - rename(#11) => eth_something
+ * - rename(#10) => eth0
+ * - if_indextoname(#10) gives eth0
+ */
+ if (!nm_streq(known_ifnames[0], known_ifnames[1])) {
+ gboolean retry;
+
+ /* we detected a possible(!) rename.
+ *
+ * For getters it's straight forward to just retry the call.
+ *
+ * For setters we also always retry. If our previous call operated on the right device,
+ * calling it again should have no bad effect (just setting the same thing more than once).
+ *
+ * The only potential bad thing is if there was a race involving swapping names, and we just
+ * set the ioctl option on the wrong device. But then the bad thing already happenned and
+ * we cannot detect it (nor do anything about it). At least, we can retry and set the
+ * option on the right interface. */
+ retry = (try_count < 5);
+
+ nm_log_trace(LOGD_PLATFORM,
+ "%s[%d]: %s: rename detected from \"%s\" to \"%s\". %s",
+ log_ioctl_type,
+ ifindex,
+ log_subtype,
+ known_ifnames[(try_count - 1) % 2],
+ known_ifnames[try_count % 2],
+ retry ? "Retry" : "No retry");
+ if (inout_ifname)
+ nm_utils_ifname_cpy(inout_ifname, known_ifnames[try_count % 2]);
+ if (retry) {
+ if (edata_size > 0)
+ memcpy(edata, edata_backup, edata_size);
+ goto again;
+ }
+ }
+
+out:
+ if (failure_reason) {
+ nm_log_trace(LOGD_PLATFORM,
+ "%s[%d]: %s: %s: %s",
+ log_ioctl_type,
+ ifindex,
+ log_subtype,
+ failure_reason,
+ r < 0 ? nm_strerror_native(-r) : "assume success");
+ }
+ if (r >= 0)
+ NM_SET_OUT(out_ifreq, ifr);
+ return r;
+}
+
+/******************************************************************************
+ * ethtool
+ *****************************************************************************/
+
+static NM_UTILS_ENUM2STR_DEFINE(_ethtool_cmd_to_string,
+ guint32,
+ NM_UTILS_ENUM2STR(ETHTOOL_GCOALESCE, "ETHTOOL_GCOALESCE"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GDRVINFO, "ETHTOOL_GDRVINFO"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GFEATURES, "ETHTOOL_GFEATURES"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GLINK, "ETHTOOL_GLINK"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GPERMADDR, "ETHTOOL_GPERMADDR"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GRINGPARAM, "ETHTOOL_GRINGPARAM"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GSET, "ETHTOOL_GSET"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GSSET_INFO, "ETHTOOL_GSSET_INFO"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GSTATS, "ETHTOOL_GSTATS"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GSTRINGS, "ETHTOOL_GSTRINGS"),
+ NM_UTILS_ENUM2STR(ETHTOOL_GWOL, "ETHTOOL_GWOL"),
+ NM_UTILS_ENUM2STR(ETHTOOL_SCOALESCE, "ETHTOOL_SCOALESCE"),
+ NM_UTILS_ENUM2STR(ETHTOOL_SFEATURES, "ETHTOOL_SFEATURES"),
+ NM_UTILS_ENUM2STR(ETHTOOL_SRINGPARAM, "ETHTOOL_SRINGPARAM"),
+ NM_UTILS_ENUM2STR(ETHTOOL_SSET, "ETHTOOL_SSET"),
+ NM_UTILS_ENUM2STR(ETHTOOL_SWOL, "ETHTOOL_SWOL"), );
+
+static const char *
+_ethtool_edata_to_string(gpointer edata, gsize edata_size, char *sbuf, gsize sbuf_len)
+{
+ nm_assert(edata);
+ nm_assert(edata_size >= sizeof(guint32));
+ nm_assert((((intptr_t) edata) % _nm_alignof(guint32)) == 0);
+
+ return _ethtool_cmd_to_string(*((guint32 *) edata), sbuf, sbuf_len);
+}
+
+/*****************************************************************************/
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 27)
+ #define ethtool_cmd_speed(pedata) ((pedata)->speed)
+
+ #define ethtool_cmd_speed_set(pedata, speed) \
+ G_STMT_START \
+ { \
+ (pedata)->speed = (guint16)(speed); \
+ } \
+ G_STMT_END
+#endif
+
+static int
+_ethtool_call_handle(SocketHandle *shandle, gpointer edata, gsize edata_size)
+{
+ char sbuf[50];
+
+ return _ioctl_call("ethtool",
+ _ethtool_edata_to_string(edata, edata_size, sbuf, sizeof(sbuf)),
+ SIOCETHTOOL,
+ shandle->ifindex,
+ &shandle->fd,
+ shandle->ifname,
+ IOCTL_CALL_DATA_TYPE_IFRDATA,
+ edata,
+ edata_size,
+ NULL);
+}
+
+static int
+_ethtool_call_once(int ifindex, gpointer edata, gsize edata_size)
+{
+ char sbuf[50];
+
+ return _ioctl_call("ethtool",
+ _ethtool_edata_to_string(edata, edata_size, sbuf, sizeof(sbuf)),
+ SIOCETHTOOL,
+ ifindex,
+ NULL,
+ NULL,
+ IOCTL_CALL_DATA_TYPE_IFRDATA,
+ edata,
+ edata_size,
+ NULL);
+}
+
+/*****************************************************************************/
+
+static struct ethtool_gstrings *
+ethtool_get_stringset(SocketHandle *shandle, int stringset_id)
+{
+ struct {
+ struct ethtool_sset_info info;
+ guint32 sentinel;
+ } sset_info = {
+ .info.cmd = ETHTOOL_GSSET_INFO,
+ .info.reserved = 0,
+ .info.sset_mask = (1ULL << stringset_id),
+ };
+ const guint32 * pdata;
+ gs_free struct ethtool_gstrings *gstrings = NULL;
+ gsize gstrings_len;
+ guint32 i, len;
+
+ if (_ethtool_call_handle(shandle, &sset_info, sizeof(sset_info)) < 0)
+ return NULL;
+ if (!sset_info.info.sset_mask)
+ return NULL;
+
+ pdata = (guint32 *) sset_info.info.data;
+
+ len = *pdata;
+
+ gstrings_len = sizeof(*gstrings) + (len * ETH_GSTRING_LEN);
+ gstrings = g_malloc0(gstrings_len);
+ gstrings->cmd = ETHTOOL_GSTRINGS;
+ gstrings->string_set = stringset_id;
+ gstrings->len = len;
+ if (gstrings->len > 0) {
+ if (_ethtool_call_handle(shandle, gstrings, gstrings_len) < 0)
+ return NULL;
+ for (i = 0; i < gstrings->len; i++) {
+ /* ensure NUL terminated */
+ gstrings->data[i * ETH_GSTRING_LEN + (ETH_GSTRING_LEN - 1)] = '\0';
+ }
+ }
+
+ return g_steal_pointer(&gstrings);
+}
+
+static int
+ethtool_gstrings_find(const struct ethtool_gstrings *gstrings, const char *needle)
+{
+ guint32 i;
+
+ /* ethtool_get_stringset() always ensures NUL terminated strings at ETH_GSTRING_LEN.
+ * that means, we cannot possibly request longer names. */
+ nm_assert(needle && strlen(needle) < ETH_GSTRING_LEN);
+
+ for (i = 0; i < gstrings->len; i++) {
+ if (nm_streq((char *) &gstrings->data[i * ETH_GSTRING_LEN], needle))
+ return i;
+ }
+ return -1;
+}
+
+static int
+ethtool_get_stringset_index(SocketHandle *shandle, int stringset_id, const char *needle)
+{
+ gs_free struct ethtool_gstrings *gstrings = NULL;
+
+ /* ethtool_get_stringset() always ensures NUL terminated strings at ETH_GSTRING_LEN.
+ * that means, we cannot possibly request longer names. */
+ nm_assert(needle && strlen(needle) < ETH_GSTRING_LEN);
+
+ gstrings = ethtool_get_stringset(shandle, stringset_id);
+ if (gstrings)
+ return ethtool_gstrings_find(gstrings, needle);
+ return -1;
+}
+
+/*****************************************************************************/
+
+static const NMEthtoolFeatureInfo _ethtool_feature_infos[_NM_ETHTOOL_ID_FEATURE_NUM] = {
+#define ETHT_FEAT(eid, ...) \
+ { \
+ .ethtool_id = eid, .n_kernel_names = NM_NARG(__VA_ARGS__), \
+ .kernel_names = ((const char *const[]){__VA_ARGS__}), \
+ }
+
+ /* the order does only matter for one thing: if it happens that more than one NMEthtoolID
+ * reference the same kernel-name, then the one that is mentioned *later* will win in
+ * case these NMEthtoolIDs are set. That mostly only makes sense for ethtool-ids which
+ * refer to multiple features ("feature-tso"), while also having more specific ids
+ * ("feature-tx-tcp-segmentation"). */
+
+ /* names from ethtool utility, which are aliases for multiple features. */
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_SG, "tx-scatter-gather", "tx-scatter-gather-fraglist"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TSO,
+ "tx-tcp-segmentation",
+ "tx-tcp-ecn-segmentation",
+ "tx-tcp-mangleid-segmentation",
+ "tx-tcp6-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX,
+ "tx-checksum-ipv4",
+ "tx-checksum-ip-generic",
+ "tx-checksum-ipv6",
+ "tx-checksum-fcoe-crc",
+ "tx-checksum-sctp"),
+
+ /* names from ethtool utility, which are aliases for one feature. */
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_GRO, "rx-gro"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_GSO, "tx-generic-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_LRO, "rx-lro"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_NTUPLE, "rx-ntuple-filter"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX, "rx-checksum"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RXHASH, "rx-hashing"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RXVLAN, "rx-vlan-hw-parse"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TXVLAN, "tx-vlan-hw-insert"),
+
+ /* names of features, as known by kernel. */
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_ESP_HW_OFFLOAD, "esp-hw-offload"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_ESP_TX_CSUM_HW_OFFLOAD, "esp-tx-csum-hw-offload"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_FCOE_MTU, "fcoe-mtu"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_HIGHDMA, "highdma"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_HW_TC_OFFLOAD, "hw-tc-offload"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_L2_FWD_OFFLOAD, "l2-fwd-offload"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_LOOPBACK, "loopback"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_ALL, "rx-all"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_FCS, "rx-fcs"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_GRO_HW, "rx-gro-hw"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_UDP_TUNNEL_PORT_OFFLOAD, "rx-udp_tunnel-port-offload"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_VLAN_FILTER, "rx-vlan-filter"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_VLAN_STAG_FILTER, "rx-vlan-stag-filter"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_RX_VLAN_STAG_HW_PARSE, "rx-vlan-stag-hw-parse"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TLS_HW_RECORD, "tls-hw-record"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TLS_HW_TX_OFFLOAD, "tls-hw-tx-offload"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_CHECKSUM_FCOE_CRC, "tx-checksum-fcoe-crc"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_CHECKSUM_IPV4, "tx-checksum-ipv4"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_CHECKSUM_IPV6, "tx-checksum-ipv6"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_CHECKSUM_IP_GENERIC, "tx-checksum-ip-generic"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_CHECKSUM_SCTP, "tx-checksum-sctp"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_ESP_SEGMENTATION, "tx-esp-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_FCOE_SEGMENTATION, "tx-fcoe-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_GRE_CSUM_SEGMENTATION, "tx-gre-csum-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_GRE_SEGMENTATION, "tx-gre-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_GSO_PARTIAL, "tx-gso-partial"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_GSO_ROBUST, "tx-gso-robust"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_IPXIP4_SEGMENTATION, "tx-ipxip4-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_IPXIP6_SEGMENTATION, "tx-ipxip6-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_NOCACHE_COPY, "tx-nocache-copy"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_SCATTER_GATHER, "tx-scatter-gather"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_SCATTER_GATHER_FRAGLIST, "tx-scatter-gather-fraglist"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_SCTP_SEGMENTATION, "tx-sctp-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_TCP6_SEGMENTATION, "tx-tcp6-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_TCP_ECN_SEGMENTATION, "tx-tcp-ecn-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_TCP_MANGLEID_SEGMENTATION, "tx-tcp-mangleid-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_TCP_SEGMENTATION, "tx-tcp-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_UDP_SEGMENTATION, "tx-udp-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_UDP_TNL_CSUM_SEGMENTATION, "tx-udp_tnl-csum-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_UDP_TNL_SEGMENTATION, "tx-udp_tnl-segmentation"),
+ ETHT_FEAT(NM_ETHTOOL_ID_FEATURE_TX_VLAN_STAG_HW_INSERT, "tx-vlan-stag-hw-insert"),
+};
+
+/* the number of kernel features that we handle. It essentially is the sum of all
+ * kernel_names. So, all ethtool-ids that reference exactly one kernel-name
+ * (_NM_ETHTOOL_ID_FEATURE_NUM) + some extra, for ethtool-ids that are aliases
+ * for multiple kernel-names. */
+#define N_ETHTOOL_KERNEL_FEATURES (((guint) _NM_ETHTOOL_ID_FEATURE_NUM) + 8u)
+
+static void
+_ASSERT_ethtool_feature_infos(void)
+{
+#if NM_MORE_ASSERTS > 10
+ guint i, k, n;
+ bool found[_NM_ETHTOOL_ID_FEATURE_NUM] = {};
+
+ G_STATIC_ASSERT_EXPR(G_N_ELEMENTS(_ethtool_feature_infos) == _NM_ETHTOOL_ID_FEATURE_NUM);
+
+ n = 0;
+ for (i = 0; i < G_N_ELEMENTS(_ethtool_feature_infos); i++) {
+ NMEthtoolFeatureState kstate;
+ const NMEthtoolFeatureInfo *inf = &_ethtool_feature_infos[i];
+
+ g_assert(inf->ethtool_id >= _NM_ETHTOOL_ID_FEATURE_FIRST);
+ g_assert(inf->ethtool_id <= _NM_ETHTOOL_ID_FEATURE_LAST);
+ g_assert(inf->n_kernel_names > 0);
+
+ for (k = 0; k < i; k++)
+ g_assert(inf->ethtool_id != _ethtool_feature_infos[k].ethtool_id);
+
+ g_assert(!found[_NM_ETHTOOL_ID_FEATURE_AS_IDX(inf->ethtool_id)]);
+ found[_NM_ETHTOOL_ID_FEATURE_AS_IDX(inf->ethtool_id)] = TRUE;
+
+ kstate.idx_kernel_name = inf->n_kernel_names - 1;
+ g_assert((guint) kstate.idx_kernel_name == (guint)(inf->n_kernel_names - 1));
+
+ n += inf->n_kernel_names;
+ for (k = 0; k < inf->n_kernel_names; k++) {
+ g_assert(nm_utils_strv_find_first((char **) inf->kernel_names, k, inf->kernel_names[k])
+ < 0);
+ }
+ }
+
+ for (i = 0; i < _NM_ETHTOOL_ID_FEATURE_NUM; i++)
+ g_assert(found[i]);
+
+ g_assert(n == N_ETHTOOL_KERNEL_FEATURES);
+#endif
+}
+
+static NMEthtoolFeatureStates *
+ethtool_get_features(SocketHandle *shandle)
+{
+ gs_free NMEthtoolFeatureStates * states = NULL;
+ gs_free struct ethtool_gstrings *ss_features = NULL;
+
+ _ASSERT_ethtool_feature_infos();
+
+ ss_features = ethtool_get_stringset(shandle, ETH_SS_FEATURES);
+ if (!ss_features)
+ return NULL;
+
+ if (ss_features->len > 0) {
+ gs_free struct ethtool_gfeatures * gfeatures_free = NULL;
+ struct ethtool_gfeatures * gfeatures;
+ gsize gfeatures_len;
+ guint idx;
+ const NMEthtoolFeatureState * states_list0 = NULL;
+ const NMEthtoolFeatureState *const *states_plist0 = NULL;
+ guint states_plist_n = 0;
+
+ gfeatures_len = sizeof(struct ethtool_gfeatures)
+ + (NM_DIV_ROUND_UP(ss_features->len, 32u) * sizeof(gfeatures->features[0]));
+ gfeatures = nm_malloc0_maybe_a(300, gfeatures_len, &gfeatures_free);
+ gfeatures->cmd = ETHTOOL_GFEATURES;
+ gfeatures->size = NM_DIV_ROUND_UP(ss_features->len, 32u);
+ if (_ethtool_call_handle(shandle, gfeatures, gfeatures_len) < 0)
+ return NULL;
+
+ for (idx = 0; idx < G_N_ELEMENTS(_ethtool_feature_infos); idx++) {
+ const NMEthtoolFeatureInfo *info = &_ethtool_feature_infos[idx];
+ guint idx_kernel_name;
+
+ for (idx_kernel_name = 0; idx_kernel_name < info->n_kernel_names; idx_kernel_name++) {
+ NMEthtoolFeatureState *kstate;
+ const char * kernel_name = info->kernel_names[idx_kernel_name];
+ int i_feature;
+ guint i_block;
+ guint32 i_flag;
+
+ i_feature = ethtool_gstrings_find(ss_features, kernel_name);
+ if (i_feature < 0)
+ continue;
+
+ i_block = ((guint) i_feature) / 32u;
+ i_flag = (guint32)(1u << (((guint) i_feature) % 32u));
+
+ if (!states) {
+ states = g_malloc0(
+ sizeof(NMEthtoolFeatureStates)
+ + (N_ETHTOOL_KERNEL_FEATURES * sizeof(NMEthtoolFeatureState))
+ + ((N_ETHTOOL_KERNEL_FEATURES + G_N_ELEMENTS(_ethtool_feature_infos))
+ * sizeof(NMEthtoolFeatureState *)));
+ states_list0 = &states->states_list[0];
+ states_plist0 = (gpointer) &states_list0[N_ETHTOOL_KERNEL_FEATURES];
+ states->n_ss_features = ss_features->len;
+ }
+
+ nm_assert(states->n_states < N_ETHTOOL_KERNEL_FEATURES);
+ kstate = (NMEthtoolFeatureState *) &states_list0[states->n_states];
+ states->n_states++;
+
+ kstate->info = info;
+ kstate->idx_ss_features = i_feature;
+ kstate->idx_kernel_name = idx_kernel_name;
+ kstate->available = !!(gfeatures->features[i_block].available & i_flag);
+ kstate->requested = !!(gfeatures->features[i_block].requested & i_flag);
+ kstate->active = !!(gfeatures->features[i_block].active & i_flag);
+ kstate->never_changed = !!(gfeatures->features[i_block].never_changed & i_flag);
+
+ nm_assert(states_plist_n
+ < N_ETHTOOL_KERNEL_FEATURES + G_N_ELEMENTS(_ethtool_feature_infos));
+
+ if (!states->states_indexed[_NM_ETHTOOL_ID_FEATURE_AS_IDX(info->ethtool_id)])
+ states->states_indexed[_NM_ETHTOOL_ID_FEATURE_AS_IDX(info->ethtool_id)] =
+ &states_plist0[states_plist_n];
+ ((const NMEthtoolFeatureState **) states_plist0)[states_plist_n] = kstate;
+ states_plist_n++;
+ }
+
+ if (states && states->states_indexed[_NM_ETHTOOL_ID_FEATURE_AS_IDX(info->ethtool_id)]) {
+ nm_assert(states_plist_n
+ < N_ETHTOOL_KERNEL_FEATURES + G_N_ELEMENTS(_ethtool_feature_infos));
+ nm_assert(!states_plist0[states_plist_n]);
+ states_plist_n++;
+ }
+ }
+ }
+
+ return g_steal_pointer(&states);
+}
+
+NMEthtoolFeatureStates *
+nmp_utils_ethtool_get_features(int ifindex)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+ NMEthtoolFeatureStates * features;
+
+ g_return_val_if_fail(ifindex > 0, 0);
+
+ features = ethtool_get_features(&shandle);
+
+ if (!features) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: failure getting features",
+ ifindex,
+ "get-features");
+ return NULL;
+ }
+
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: retrieved kernel features",
+ ifindex,
+ "get-features");
+ return features;
+}
+
+static const char *
+_ethtool_feature_state_to_string(char * buf,
+ gsize buf_size,
+ const NMEthtoolFeatureState *s,
+ const char * prefix)
+{
+ int l;
+
+ l = g_snprintf(buf,
+ buf_size,
+ "%s %s%s",
+ prefix ?: "",
+ ONOFF(s->active),
+ (!s->available || s->never_changed)
+ ? ", [fixed]"
+ : ((s->requested != s->active)
+ ? (s->requested ? ", [requested on]" : ", [requested off]")
+ : ""));
+ nm_assert(l < buf_size);
+ return buf;
+}
+
+gboolean
+nmp_utils_ethtool_set_features(
+ int ifindex,
+ const NMEthtoolFeatureStates *features,
+ const NMOptionBool *requested /* indexed by NMEthtoolID - _NM_ETHTOOL_ID_FEATURE_FIRST */,
+ gboolean do_set /* or reset */)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+ gs_free struct ethtool_sfeatures * sfeatures_free = NULL;
+ struct ethtool_sfeatures * sfeatures;
+ gsize sfeatures_len;
+ int r;
+ guint i, j;
+ struct {
+ const NMEthtoolFeatureState *f_state;
+ NMOptionBool requested;
+ } set_states[N_ETHTOOL_KERNEL_FEATURES];
+ guint set_states_n = 0;
+ gboolean success = TRUE;
+
+ g_return_val_if_fail(ifindex > 0, 0);
+ g_return_val_if_fail(features, 0);
+ g_return_val_if_fail(requested, 0);
+
+ nm_assert(features->n_states <= N_ETHTOOL_KERNEL_FEATURES);
+
+ for (i = 0; i < _NM_ETHTOOL_ID_FEATURE_NUM; i++) {
+ const NMEthtoolFeatureState *const *states_indexed;
+
+ if (requested[i] == NM_OPTION_BOOL_DEFAULT)
+ continue;
+
+ if (!(states_indexed = features->states_indexed[i])) {
+ if (do_set) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: set feature %s: skip (not found)",
+ ifindex,
+ "set-features",
+ nm_ethtool_data[i + _NM_ETHTOOL_ID_FEATURE_FIRST]->optname);
+ success = FALSE;
+ }
+ continue;
+ }
+
+ for (j = 0; states_indexed[j]; j++) {
+ const NMEthtoolFeatureState *s = states_indexed[j];
+ char sbuf[255];
+
+ if (set_states_n >= G_N_ELEMENTS(set_states))
+ g_return_val_if_reached(FALSE);
+
+ if (s->never_changed) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: %s feature %s (%s): %s, %s (skip feature marked as "
+ "never changed)",
+ ifindex,
+ "set-features",
+ do_set ? "set" : "reset",
+ nm_ethtool_data[i + _NM_ETHTOOL_ID_FEATURE_FIRST]->optname,
+ s->info->kernel_names[s->idx_kernel_name],
+ ONOFF(do_set ? requested[i] == NM_OPTION_BOOL_TRUE : s->active),
+ _ethtool_feature_state_to_string(sbuf,
+ sizeof(sbuf),
+ s,
+ do_set ? " currently:" : " before:"));
+ continue;
+ }
+
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: %s feature %s (%s): %s, %s",
+ ifindex,
+ "set-features",
+ do_set ? "set" : "reset",
+ nm_ethtool_data[i + _NM_ETHTOOL_ID_FEATURE_FIRST]->optname,
+ s->info->kernel_names[s->idx_kernel_name],
+ ONOFF(do_set ? requested[i] == NM_OPTION_BOOL_TRUE : s->active),
+ _ethtool_feature_state_to_string(sbuf,
+ sizeof(sbuf),
+ s,
+ do_set ? " currently:" : " before:"));
+
+ if (do_set && (!s->available || s->never_changed)
+ && (s->active != (requested[i] == NM_OPTION_BOOL_TRUE))) {
+ /* we request to change a flag which kernel reported as fixed.
+ * While the ethtool operation will silently succeed, mark the request
+ * as failure. */
+ success = FALSE;
+ }
+
+ set_states[set_states_n].f_state = s;
+ set_states[set_states_n].requested = requested[i];
+ set_states_n++;
+ }
+ }
+
+ if (set_states_n == 0) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: no feature requested",
+ ifindex,
+ "set-features");
+ return TRUE;
+ }
+
+ sfeatures_len =
+ sizeof(struct ethtool_sfeatures)
+ + (NM_DIV_ROUND_UP(features->n_ss_features, 32U) * sizeof(sfeatures->features[0]));
+ sfeatures = nm_malloc0_maybe_a(300, sfeatures_len, &sfeatures_free);
+ sfeatures->cmd = ETHTOOL_SFEATURES;
+ sfeatures->size = NM_DIV_ROUND_UP(features->n_ss_features, 32U);
+
+ for (i = 0; i < set_states_n; i++) {
+ const NMEthtoolFeatureState *s = set_states[i].f_state;
+ guint i_block;
+ guint32 i_flag;
+ gboolean is_requested;
+
+ i_block = s->idx_ss_features / 32u;
+ i_flag = (guint32)(1u << (s->idx_ss_features % 32u));
+
+ sfeatures->features[i_block].valid |= i_flag;
+
+ if (do_set)
+ is_requested = (set_states[i].requested == NM_OPTION_BOOL_TRUE);
+ else
+ is_requested = s->active;
+
+ if (is_requested)
+ sfeatures->features[i_block].requested |= i_flag;
+ else
+ sfeatures->features[i_block].requested &= ~i_flag;
+ }
+
+ r = _ethtool_call_handle(&shandle, sfeatures, sfeatures_len);
+ if (r < 0) {
+ success = FALSE;
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: failure setting features (%s)",
+ ifindex,
+ "set-features",
+ nm_strerror_native(-r));
+ return FALSE;
+ }
+
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: %s",
+ ifindex,
+ "set-features",
+ success ? "successfully setting features"
+ : "at least some of the features were not successfully set");
+ return success;
+}
+
+static gboolean
+ethtool_get_coalesce(SocketHandle *shandle, NMEthtoolCoalesceState *coalesce)
+{
+ struct ethtool_coalesce eth_data;
+
+ eth_data.cmd = ETHTOOL_GCOALESCE;
+
+ if (_ethtool_call_handle(shandle, &eth_data, sizeof(struct ethtool_coalesce)) != 0)
+ return FALSE;
+
+ *coalesce = (NMEthtoolCoalesceState){
+ .s = {
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS)] =
+ eth_data.rx_coalesce_usecs,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES)] =
+ eth_data.rx_max_coalesced_frames,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS_IRQ)] =
+ eth_data.rx_coalesce_usecs_irq,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES_IRQ)] =
+ eth_data.rx_max_coalesced_frames_irq,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS)] =
+ eth_data.tx_coalesce_usecs,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES)] =
+ eth_data.tx_max_coalesced_frames,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS_IRQ)] =
+ eth_data.tx_coalesce_usecs_irq,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES_IRQ)] =
+ eth_data.tx_max_coalesced_frames_irq,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_STATS_BLOCK_USECS)] =
+ eth_data.stats_block_coalesce_usecs,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_ADAPTIVE_RX)] =
+ eth_data.use_adaptive_rx_coalesce,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_ADAPTIVE_TX)] =
+ eth_data.use_adaptive_tx_coalesce,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_PKT_RATE_LOW)] =
+ eth_data.pkt_rate_low,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS_LOW)] =
+ eth_data.rx_coalesce_usecs_low,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES_LOW)] =
+ eth_data.rx_max_coalesced_frames_low,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS_LOW)] =
+ eth_data.tx_coalesce_usecs_low,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES_LOW)] =
+ eth_data.tx_max_coalesced_frames_low,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_PKT_RATE_HIGH)] =
+ eth_data.pkt_rate_high,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS_HIGH)] =
+ eth_data.rx_coalesce_usecs_high,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES_HIGH)] =
+ eth_data.rx_max_coalesced_frames_high,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS_HIGH)] =
+ eth_data.tx_coalesce_usecs_high,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES_HIGH)] =
+ eth_data.tx_max_coalesced_frames_high,
+ [_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_SAMPLE_INTERVAL)] =
+ eth_data.rate_sample_interval,
+ }};
+ return TRUE;
+}
+
+gboolean
+nmp_utils_ethtool_get_coalesce(int ifindex, NMEthtoolCoalesceState *coalesce)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+ g_return_val_if_fail(coalesce, FALSE);
+
+ if (!ethtool_get_coalesce(&shandle, coalesce)) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: failure getting coalesce settings",
+ ifindex,
+ "get-coalesce");
+ return FALSE;
+ }
+
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: retrieved kernel coalesce settings",
+ ifindex,
+ "get-coalesce");
+ return TRUE;
+}
+
+static gboolean
+ethtool_set_coalesce(SocketHandle *shandle, const NMEthtoolCoalesceState *coalesce)
+{
+ struct ethtool_coalesce eth_data;
+ gboolean success;
+
+ nm_assert(shandle);
+ nm_assert(coalesce);
+
+ eth_data = (struct ethtool_coalesce){
+ .cmd = ETHTOOL_SCOALESCE,
+ .rx_coalesce_usecs =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS)],
+ .rx_max_coalesced_frames =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES)],
+ .rx_coalesce_usecs_irq =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS_IRQ)],
+ .rx_max_coalesced_frames_irq =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES_IRQ)],
+ .tx_coalesce_usecs =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS)],
+ .tx_max_coalesced_frames =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES)],
+ .tx_coalesce_usecs_irq =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS_IRQ)],
+ .tx_max_coalesced_frames_irq =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES_IRQ)],
+ .stats_block_coalesce_usecs =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_STATS_BLOCK_USECS)],
+ .use_adaptive_rx_coalesce =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_ADAPTIVE_RX)],
+ .use_adaptive_tx_coalesce =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_ADAPTIVE_TX)],
+ .pkt_rate_low =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_PKT_RATE_LOW)],
+ .rx_coalesce_usecs_low =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS_LOW)],
+ .rx_max_coalesced_frames_low =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES_LOW)],
+ .tx_coalesce_usecs_low =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS_LOW)],
+ .tx_max_coalesced_frames_low =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES_LOW)],
+ .pkt_rate_high =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_PKT_RATE_HIGH)],
+ .rx_coalesce_usecs_high =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_USECS_HIGH)],
+ .rx_max_coalesced_frames_high =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_RX_FRAMES_HIGH)],
+ .tx_coalesce_usecs_high =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_USECS_HIGH)],
+ .tx_max_coalesced_frames_high =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_TX_FRAMES_HIGH)],
+ .rate_sample_interval =
+ coalesce->s[_NM_ETHTOOL_ID_COALESCE_AS_IDX(NM_ETHTOOL_ID_COALESCE_SAMPLE_INTERVAL)],
+ };
+
+ success = (_ethtool_call_handle(shandle, &eth_data, sizeof(struct ethtool_coalesce)) == 0);
+ return success;
+}
+
+gboolean
+nmp_utils_ethtool_set_coalesce(int ifindex, const NMEthtoolCoalesceState *coalesce)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+ g_return_val_if_fail(coalesce, FALSE);
+
+ if (!ethtool_set_coalesce(&shandle, coalesce)) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: failure setting coalesce settings",
+ ifindex,
+ "set-coalesce");
+ return FALSE;
+ }
+
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: set kernel coalesce settings",
+ ifindex,
+ "set-coalesce");
+ return TRUE;
+}
+
+static gboolean
+ethtool_get_ring(SocketHandle *shandle, NMEthtoolRingState *ring)
+{
+ struct ethtool_ringparam eth_data;
+
+ eth_data.cmd = ETHTOOL_GRINGPARAM;
+
+ if (_ethtool_call_handle(shandle, &eth_data, sizeof(struct ethtool_ringparam)) != 0)
+ return FALSE;
+
+ ring->rx_pending = eth_data.rx_pending;
+ ring->rx_jumbo_pending = eth_data.rx_jumbo_pending;
+ ring->rx_mini_pending = eth_data.rx_mini_pending;
+ ring->tx_pending = eth_data.tx_pending;
+
+ return TRUE;
+}
+
+gboolean
+nmp_utils_ethtool_get_ring(int ifindex, NMEthtoolRingState *ring)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+ g_return_val_if_fail(ring, FALSE);
+
+ if (!ethtool_get_ring(&shandle, ring)) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: failure getting ring settings",
+ ifindex,
+ "get-ring");
+ return FALSE;
+ }
+
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: retrieved kernel ring settings",
+ ifindex,
+ "get-ring");
+ return TRUE;
+}
+
+static gboolean
+ethtool_set_ring(SocketHandle *shandle, const NMEthtoolRingState *ring)
+{
+ gboolean success;
+ struct ethtool_ringparam eth_data;
+
+ g_return_val_if_fail(shandle, FALSE);
+ g_return_val_if_fail(ring, FALSE);
+
+ eth_data = (struct ethtool_ringparam){
+ .cmd = ETHTOOL_SRINGPARAM,
+ .rx_pending = ring->rx_pending,
+ .rx_jumbo_pending = ring->rx_jumbo_pending,
+ .rx_mini_pending = ring->rx_mini_pending,
+ .tx_pending = ring->tx_pending,
+ };
+
+ success = (_ethtool_call_handle(shandle, &eth_data, sizeof(struct ethtool_ringparam)) == 0);
+ return success;
+}
+
+gboolean
+nmp_utils_ethtool_set_ring(int ifindex, const NMEthtoolRingState *ring)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+ g_return_val_if_fail(ring, FALSE);
+
+ if (!ethtool_set_ring(&shandle, ring)) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %s: failure setting ring settings",
+ ifindex,
+ "set-ring");
+ return FALSE;
+ }
+
+ nm_log_trace(LOGD_PLATFORM, "ethtool[%d]: %s: set kernel ring settings", ifindex, "set-ring");
+ return TRUE;
+}
+
+/*****************************************************************************/
+
+gboolean
+nmp_utils_ethtool_get_driver_info(int ifindex, NMPUtilsEthtoolDriverInfo *data)
+{
+ struct ethtool_drvinfo *drvinfo;
+
+ G_STATIC_ASSERT_EXPR(sizeof(*data) == sizeof(*drvinfo));
+ G_STATIC_ASSERT_EXPR(offsetof(NMPUtilsEthtoolDriverInfo, driver)
+ == offsetof(struct ethtool_drvinfo, driver));
+ G_STATIC_ASSERT_EXPR(offsetof(NMPUtilsEthtoolDriverInfo, version)
+ == offsetof(struct ethtool_drvinfo, version));
+ G_STATIC_ASSERT_EXPR(offsetof(NMPUtilsEthtoolDriverInfo, fw_version)
+ == offsetof(struct ethtool_drvinfo, fw_version));
+ G_STATIC_ASSERT_EXPR(sizeof(data->driver) == sizeof(drvinfo->driver));
+ G_STATIC_ASSERT_EXPR(sizeof(data->version) == sizeof(drvinfo->version));
+ G_STATIC_ASSERT_EXPR(sizeof(data->fw_version) == sizeof(drvinfo->fw_version));
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+ g_return_val_if_fail(data, FALSE);
+
+ drvinfo = (struct ethtool_drvinfo *) data;
+ *drvinfo = (struct ethtool_drvinfo){
+ .cmd = ETHTOOL_GDRVINFO,
+ };
+ return _ethtool_call_once(ifindex, drvinfo, sizeof(*drvinfo)) >= 0;
+}
+
+gboolean
+nmp_utils_ethtool_get_permanent_address(int ifindex, guint8 *buf, size_t *length)
+{
+ struct {
+ struct ethtool_perm_addr e;
+ guint8 _extra_data[_NM_UTILS_HWADDR_LEN_MAX + 1];
+ } edata = {
+ .e.cmd = ETHTOOL_GPERMADDR,
+ .e.size = _NM_UTILS_HWADDR_LEN_MAX,
+ };
+ const guint8 *pdata;
+
+ guint i;
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ if (_ethtool_call_once(ifindex, &edata, sizeof(edata)) < 0)
+ return FALSE;
+
+ if (edata.e.size > _NM_UTILS_HWADDR_LEN_MAX)
+ return FALSE;
+ if (edata.e.size < 1)
+ return FALSE;
+
+ pdata = (const guint8 *) edata.e.data;
+
+ if (NM_IN_SET(pdata[0], 0, 0xFF)) {
+ /* Some drivers might return a permanent address of all zeros.
+ * Reject that (rh#1264024)
+ *
+ * Some drivers return a permanent address of all ones. Reject that too */
+ for (i = 1; i < edata.e.size; i++) {
+ if (pdata[0] != pdata[i])
+ goto not_all_0or1;
+ }
+ return FALSE;
+ }
+
+not_all_0or1:
+ memcpy(buf, pdata, edata.e.size);
+ *length = edata.e.size;
+ return TRUE;
+}
+
+gboolean
+nmp_utils_ethtool_supports_carrier_detect(int ifindex)
+{
+ struct ethtool_cmd edata = {.cmd = ETHTOOL_GLINK};
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ /* We ignore the result. If the ETHTOOL_GLINK call succeeded, then we
+ * assume the device supports carrier-detect, otherwise we assume it
+ * doesn't.
+ */
+ return _ethtool_call_once(ifindex, &edata, sizeof(edata)) >= 0;
+}
+
+gboolean
+nmp_utils_ethtool_supports_vlans(int ifindex)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+ gs_free struct ethtool_gfeatures * features_free = NULL;
+ struct ethtool_gfeatures * features;
+ gsize features_len;
+ int idx, block, bit, size;
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ idx = ethtool_get_stringset_index(&shandle, ETH_SS_FEATURES, "vlan-challenged");
+ if (idx < 0) {
+ nm_log_dbg(LOGD_PLATFORM,
+ "ethtool[%d]: vlan-challenged ethtool feature does not exist?",
+ ifindex);
+ return FALSE;
+ }
+
+ block = idx / 32;
+ bit = idx % 32;
+ size = block + 1;
+
+ features_len = sizeof(*features) + (size * sizeof(struct ethtool_get_features_block));
+ features = nm_malloc0_maybe_a(300, features_len, &features_free);
+ features->cmd = ETHTOOL_GFEATURES;
+ features->size = size;
+
+ if (_ethtool_call_handle(&shandle, features, features_len) < 0)
+ return FALSE;
+
+ return !(features->features[block].active & (1 << bit));
+}
+
+int
+nmp_utils_ethtool_get_peer_ifindex(int ifindex)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+ gsize stats_len;
+ gs_free struct ethtool_stats * stats_free = NULL;
+ struct ethtool_stats * stats;
+ int peer_ifindex_stat;
+
+ g_return_val_if_fail(ifindex > 0, 0);
+
+ peer_ifindex_stat = ethtool_get_stringset_index(&shandle, ETH_SS_STATS, "peer_ifindex");
+ if (peer_ifindex_stat < 0) {
+ nm_log_dbg(LOGD_PLATFORM, "ethtool[%d]: peer_ifindex stat does not exist?", ifindex);
+ return FALSE;
+ }
+
+ stats_len = sizeof(*stats) + (peer_ifindex_stat + 1) * sizeof(guint64);
+ stats = nm_malloc0_maybe_a(300, stats_len, &stats_free);
+ stats->cmd = ETHTOOL_GSTATS;
+ stats->n_stats = peer_ifindex_stat + 1;
+ if (_ethtool_call_handle(&shandle, stats, stats_len) < 0)
+ return 0;
+
+ return stats->data[peer_ifindex_stat];
+}
+
+gboolean
+nmp_utils_ethtool_get_wake_on_lan(int ifindex)
+{
+ struct ethtool_wolinfo wol = {
+ .cmd = ETHTOOL_GWOL,
+ };
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ if (_ethtool_call_once(ifindex, &wol, sizeof(wol)) < 0)
+ return FALSE;
+
+ return wol.wolopts != 0;
+}
+
+gboolean
+nmp_utils_ethtool_get_link_settings(int ifindex,
+ gboolean * out_autoneg,
+ guint32 * out_speed,
+ NMPlatformLinkDuplexType *out_duplex)
+{
+ struct ethtool_cmd edata = {
+ .cmd = ETHTOOL_GSET,
+ };
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ if (_ethtool_call_once(ifindex, &edata, sizeof(edata)) < 0)
+ return FALSE;
+
+ NM_SET_OUT(out_autoneg, (edata.autoneg == AUTONEG_ENABLE));
+
+ if (out_speed) {
+ guint32 speed;
+
+ speed = ethtool_cmd_speed(&edata);
+ if (speed == G_MAXUINT16 || speed == G_MAXUINT32)
+ speed = 0;
+
+ *out_speed = speed;
+ }
+
+ if (out_duplex) {
+ switch (edata.duplex) {
+ case DUPLEX_HALF:
+ *out_duplex = NM_PLATFORM_LINK_DUPLEX_HALF;
+ break;
+ case DUPLEX_FULL:
+ *out_duplex = NM_PLATFORM_LINK_DUPLEX_FULL;
+ break;
+ default: /* DUPLEX_UNKNOWN */
+ *out_duplex = NM_PLATFORM_LINK_DUPLEX_UNKNOWN;
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+#define ADVERTISED_INVALID 0
+#define BASET_ALL_MODES \
+ (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Half \
+ | ADVERTISED_100baseT_Full | ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full \
+ | ADVERTISED_10000baseT_Full)
+
+static guint32
+get_baset_mode(guint32 speed, NMPlatformLinkDuplexType duplex)
+{
+ if (duplex == NM_PLATFORM_LINK_DUPLEX_UNKNOWN)
+ return ADVERTISED_INVALID;
+
+ if (duplex == NM_PLATFORM_LINK_DUPLEX_HALF) {
+ switch (speed) {
+ case 10:
+ return ADVERTISED_10baseT_Half;
+ case 100:
+ return ADVERTISED_100baseT_Half;
+ case 1000:
+ return ADVERTISED_1000baseT_Half;
+ default:
+ return ADVERTISED_INVALID;
+ }
+ } else {
+ switch (speed) {
+ case 10:
+ return ADVERTISED_10baseT_Full;
+ case 100:
+ return ADVERTISED_100baseT_Full;
+ case 1000:
+ return ADVERTISED_1000baseT_Full;
+ case 10000:
+ return ADVERTISED_10000baseT_Full;
+ default:
+ return ADVERTISED_INVALID;
+ }
+ }
+}
+
+gboolean
+nmp_utils_ethtool_set_link_settings(int ifindex,
+ gboolean autoneg,
+ guint32 speed,
+ NMPlatformLinkDuplexType duplex)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+ struct ethtool_cmd edata = {
+ .cmd = ETHTOOL_GSET,
+ };
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+ g_return_val_if_fail((speed && duplex != NM_PLATFORM_LINK_DUPLEX_UNKNOWN)
+ || (!speed && duplex == NM_PLATFORM_LINK_DUPLEX_UNKNOWN),
+ FALSE);
+
+ /* retrieve first current settings */
+ if (_ethtool_call_handle(&shandle, &edata, sizeof(edata)) < 0)
+ return FALSE;
+
+ /* FIXME: try first new ETHTOOL_GLINKSETTINGS/SLINKSETTINGS API
+ * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f1ac7a700d039c61d8d8b99f28d605d489a60cf
+ */
+
+ /* then change the needed ones */
+ edata.cmd = ETHTOOL_SSET;
+ if (autoneg) {
+ edata.autoneg = AUTONEG_ENABLE;
+ if (!speed)
+ edata.advertising = edata.supported;
+ else {
+ guint32 mode;
+
+ mode = get_baset_mode(speed, duplex);
+
+ if (!mode) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: %uBASE-T %s duplex mode cannot be advertised",
+ ifindex,
+ speed,
+ nm_platform_link_duplex_type_to_string(duplex));
+ return FALSE;
+ }
+ if (!(edata.supported & mode)) {
+ nm_log_trace(LOGD_PLATFORM,
+ "ethtool[%d]: device does not support %uBASE-T %s duplex mode",
+ ifindex,
+ speed,
+ nm_platform_link_duplex_type_to_string(duplex));
+ return FALSE;
+ }
+ edata.advertising = (edata.supported & ~BASET_ALL_MODES) | mode;
+ }
+ } else {
+ edata.autoneg = AUTONEG_DISABLE;
+
+ if (speed)
+ ethtool_cmd_speed_set(&edata, speed);
+
+ switch (duplex) {
+ case NM_PLATFORM_LINK_DUPLEX_HALF:
+ edata.duplex = DUPLEX_HALF;
+ break;
+ case NM_PLATFORM_LINK_DUPLEX_FULL:
+ edata.duplex = DUPLEX_FULL;
+ break;
+ case NM_PLATFORM_LINK_DUPLEX_UNKNOWN:
+ break;
+ default:
+ g_return_val_if_reached(FALSE);
+ }
+ }
+
+ return _ethtool_call_handle(&shandle, &edata, sizeof(edata)) >= 0;
+}
+
+gboolean
+nmp_utils_ethtool_set_wake_on_lan(int ifindex,
+ _NMSettingWiredWakeOnLan wol,
+ const char * wol_password)
+{
+ struct ethtool_wolinfo wol_info = {
+ .cmd = ETHTOOL_SWOL,
+ .wolopts = 0,
+ };
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ if (wol == _NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE)
+ return TRUE;
+
+ nm_log_dbg(LOGD_PLATFORM,
+ "ethtool[%d]: setting Wake-on-LAN options 0x%x, password '%s'",
+ ifindex,
+ (unsigned) wol,
+ wol_password);
+
+ if (NM_FLAGS_HAS(wol, _NM_SETTING_WIRED_WAKE_ON_LAN_PHY))
+ wol_info.wolopts |= WAKE_PHY;
+ if (NM_FLAGS_HAS(wol, _NM_SETTING_WIRED_WAKE_ON_LAN_UNICAST))
+ wol_info.wolopts |= WAKE_UCAST;
+ if (NM_FLAGS_HAS(wol, _NM_SETTING_WIRED_WAKE_ON_LAN_MULTICAST))
+ wol_info.wolopts |= WAKE_MCAST;
+ if (NM_FLAGS_HAS(wol, _NM_SETTING_WIRED_WAKE_ON_LAN_BROADCAST))
+ wol_info.wolopts |= WAKE_BCAST;
+ if (NM_FLAGS_HAS(wol, _NM_SETTING_WIRED_WAKE_ON_LAN_ARP))
+ wol_info.wolopts |= WAKE_ARP;
+ if (NM_FLAGS_HAS(wol, _NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC))
+ wol_info.wolopts |= WAKE_MAGIC;
+
+ if (wol_password) {
+ if (!_nm_utils_hwaddr_aton_exact(wol_password, wol_info.sopass, ETH_ALEN)) {
+ nm_log_dbg(LOGD_PLATFORM,
+ "ethtool[%d]: couldn't parse Wake-on-LAN password '%s'",
+ ifindex,
+ wol_password);
+ return FALSE;
+ }
+ wol_info.wolopts |= WAKE_MAGICSECURE;
+ }
+
+ return _ethtool_call_once(ifindex, &wol_info, sizeof(wol_info)) >= 0;
+}
+
+/******************************************************************************
+ * mii
+ *****************************************************************************/
+
+gboolean
+nmp_utils_mii_supports_carrier_detect(int ifindex)
+{
+ nm_auto_socket_handle SocketHandle shandle = SOCKET_HANDLE_INIT(ifindex);
+ int r;
+ struct ifreq ifr;
+ struct mii_ioctl_data * mii;
+
+ g_return_val_if_fail(ifindex > 0, FALSE);
+
+ r = _ioctl_call("mii",
+ "SIOCGMIIPHY",
+ SIOCGMIIPHY,
+ shandle.ifindex,
+ &shandle.fd,
+ shandle.ifname,
+ IOCTL_CALL_DATA_TYPE_NONE,
+ NULL,
+ 0,
+ &ifr);
+ if (r < 0)
+ return FALSE;
+
+ /* If we can read the BMSR register, we assume that the card supports MII link detection */
+ mii = (struct mii_ioctl_data *) &ifr.ifr_ifru;
+ mii->reg_num = MII_BMSR;
+
+ r = _ioctl_call("mii",
+ "SIOCGMIIREG",
+ SIOCGMIIREG,
+ shandle.ifindex,
+ &shandle.fd,
+ shandle.ifname,
+ IOCTL_CALL_DATA_TYPE_IFRU,
+ mii,
+ sizeof(*mii),
+ &ifr);
+ if (r < 0)
+ return FALSE;
+
+ mii = (struct mii_ioctl_data *) &ifr.ifr_ifru;
+ nm_log_trace(LOGD_PLATFORM,
+ "mii[%d,%s]: carrier-detect yes: SIOCGMIIREG result 0x%X",
+ ifindex,
+ shandle.ifname,
+ mii->val_out);
+ return TRUE;
+}
+
+/******************************************************************************
+ * udev
+ *****************************************************************************/
+
+const char *
+nmp_utils_udev_get_driver(struct udev_device *udevice)
+{
+ struct udev_device *parent = NULL, *grandparent = NULL;
+ const char * driver, *subsys;
+
+ driver = udev_device_get_driver(udevice);
+ if (driver)
+ goto out;
+
+ /* Try the parent */
+ parent = udev_device_get_parent(udevice);
+ if (parent) {
+ driver = udev_device_get_driver(parent);
+ if (!driver) {
+ /* Try the grandparent if it's an ibmebus device or if the
+ * subsys is NULL which usually indicates some sort of
+ * platform device like a 'gadget' net interface.
+ */
+ subsys = udev_device_get_subsystem(parent);
+ if ((g_strcmp0(subsys, "ibmebus") == 0) || (subsys == NULL)) {
+ grandparent = udev_device_get_parent(parent);
+ if (grandparent)
+ driver = udev_device_get_driver(grandparent);
+ }
+ }
+ }
+
+out:
+ /* Intern the string so we don't have to worry about memory
+ * management in NMPlatformLink. */
+ return g_intern_string(driver);
+}
+
+/******************************************************************************
+ * utils
+ *****************************************************************************/
+
+NMIPConfigSource
+nmp_utils_ip_config_source_from_rtprot(guint8 rtprot)
+{
+ return ((int) rtprot) + 1;
+}
+
+NMIPConfigSource
+nmp_utils_ip_config_source_round_trip_rtprot(NMIPConfigSource source)
+{
+ /* when adding a route to kernel for a give @source, the resulting route
+ * will be put into the cache with a source of NM_IP_CONFIG_SOURCE_RTPROT_*.
+ * This function returns that. */
+ return nmp_utils_ip_config_source_from_rtprot(
+ nmp_utils_ip_config_source_coerce_to_rtprot(source));
+}
+
+guint8
+nmp_utils_ip_config_source_coerce_to_rtprot(NMIPConfigSource source)
+{
+ /* when adding a route to kernel, we coerce the @source field
+ * to rtm_protocol. This is not lossless as we map different
+ * source values to the same RTPROT uint8 value. */
+ if (source <= NM_IP_CONFIG_SOURCE_UNKNOWN)
+ return RTPROT_UNSPEC;
+
+ if (source <= _NM_IP_CONFIG_SOURCE_RTPROT_LAST)
+ return source - 1;
+
+ switch (source) {
+ case NM_IP_CONFIG_SOURCE_KERNEL:
+ return RTPROT_KERNEL;
+ case NM_IP_CONFIG_SOURCE_IP6LL:
+ return RTPROT_KERNEL;
+ case NM_IP_CONFIG_SOURCE_DHCP:
+ return RTPROT_DHCP;
+ case NM_IP_CONFIG_SOURCE_NDISC:
+ return RTPROT_RA;
+
+ default:
+ return RTPROT_STATIC;
+ }
+}
+
+NMIPConfigSource
+nmp_utils_ip_config_source_coerce_from_rtprot(NMIPConfigSource source)
+{
+ /* When we receive a route from kernel and put it into the platform cache,
+ * we preserve the protocol field by converting it to a NMIPConfigSource
+ * via nmp_utils_ip_config_source_from_rtprot().
+ *
+ * However, that is not the inverse of nmp_utils_ip_config_source_coerce_to_rtprot().
+ * Instead, to go back to the original value, you need another step:
+ * nmp_utils_ip_config_source_coerce_from_rtprot (nmp_utils_ip_config_source_from_rtprot (rtprot)).
+ *
+ * This might partly restore the original source value, but of course that
+ * is not really possible because nmp_utils_ip_config_source_coerce_to_rtprot()
+ * is not injective.
+ * */
+ switch (source) {
+ case NM_IP_CONFIG_SOURCE_RTPROT_UNSPEC:
+ return NM_IP_CONFIG_SOURCE_UNKNOWN;
+
+ case NM_IP_CONFIG_SOURCE_RTPROT_KERNEL:
+ case NM_IP_CONFIG_SOURCE_RTPROT_REDIRECT:
+ return NM_IP_CONFIG_SOURCE_KERNEL;
+
+ case NM_IP_CONFIG_SOURCE_RTPROT_RA:
+ return NM_IP_CONFIG_SOURCE_NDISC;
+
+ case NM_IP_CONFIG_SOURCE_RTPROT_DHCP:
+ return NM_IP_CONFIG_SOURCE_DHCP;
+
+ default:
+ return NM_IP_CONFIG_SOURCE_USER;
+ }
+}
+
+const char *
+nmp_utils_ip_config_source_to_string(NMIPConfigSource source, char *buf, gsize len)
+{
+ const char *s = NULL;
+ nm_utils_to_string_buffer_init(&buf, &len);
+
+ if (!len)
+ return buf;
+
+ switch (source) {
+ case NM_IP_CONFIG_SOURCE_UNKNOWN:
+ s = "unknown";
+ break;
+
+ case NM_IP_CONFIG_SOURCE_RTPROT_UNSPEC:
+ s = "rt-unspec";
+ break;
+ case NM_IP_CONFIG_SOURCE_RTPROT_REDIRECT:
+ s = "rt-redirect";
+ break;
+ case NM_IP_CONFIG_SOURCE_RTPROT_KERNEL:
+ s = "rt-kernel";
+ break;
+ case NM_IP_CONFIG_SOURCE_RTPROT_BOOT:
+ s = "rt-boot";
+ break;
+ case NM_IP_CONFIG_SOURCE_RTPROT_STATIC:
+ s = "rt-static";
+ break;
+ case NM_IP_CONFIG_SOURCE_RTPROT_DHCP:
+ s = "rt-dhcp";
+ break;
+ case NM_IP_CONFIG_SOURCE_RTPROT_RA:
+ s = "rt-ra";
+ break;
+
+ case NM_IP_CONFIG_SOURCE_KERNEL:
+ s = "kernel";
+ break;
+ case NM_IP_CONFIG_SOURCE_SHARED:
+ s = "shared";
+ break;
+ case NM_IP_CONFIG_SOURCE_IP4LL:
+ s = "ipv4ll";
+ break;
+ case NM_IP_CONFIG_SOURCE_IP6LL:
+ s = "ipv6ll";
+ break;
+ case NM_IP_CONFIG_SOURCE_PPP:
+ s = "ppp";
+ break;
+ case NM_IP_CONFIG_SOURCE_WWAN:
+ s = "wwan";
+ break;
+ case NM_IP_CONFIG_SOURCE_VPN:
+ s = "vpn";
+ break;
+ case NM_IP_CONFIG_SOURCE_DHCP:
+ s = "dhcp";
+ break;
+ case NM_IP_CONFIG_SOURCE_NDISC:
+ s = "ndisc";
+ break;
+ case NM_IP_CONFIG_SOURCE_USER:
+ s = "user";
+ break;
+ default:
+ break;
+ }
+
+ if (source >= 1 && source <= 0x100) {
+ if (s)
+ g_snprintf(buf, len, "%s", s);
+ else
+ g_snprintf(buf, len, "rt-%d", ((int) source) - 1);
+ } else {
+ if (s)
+ g_strlcpy(buf, s, len);
+ else
+ g_snprintf(buf, len, "(%d)", source);
+ }
+ return buf;
+}
+
+/**
+ * nmp_utils_sysctl_open_netdir:
+ * @ifindex: the ifindex for which to open "/sys/class/net/%s"
+ * @ifname_guess: (allow-none): optional argument, if present used as initial
+ * guess as the current name for @ifindex. If guessed right,
+ * it saves an additional if_indextoname() call.
+ * @out_ifname: (allow-none): if present, must be at least IFNAMSIZ
+ * characters. On success, this will contain the actual ifname
+ * found while opening the directory.
+ *
+ * Returns: a negative value on failure, on success returns the open fd
+ * to the "/sys/class/net/%s" directory for @ifindex.
+ */
+int
+nmp_utils_sysctl_open_netdir(int ifindex, const char *ifname_guess, char *out_ifname)
+{
+#define SYS_CLASS_NET "/sys/class/net/"
+ const char *ifname = ifname_guess;
+ char ifname_buf_last_try[IFNAMSIZ];
+ char ifname_buf[IFNAMSIZ];
+ guint try_count = 0;
+ char sysdir[NM_STRLEN(SYS_CLASS_NET) + IFNAMSIZ] = SYS_CLASS_NET;
+ char fd_buf[256];
+ ssize_t nn;
+
+ g_return_val_if_fail(ifindex >= 0, -1);
+
+ ifname_buf_last_try[0] = '\0';
+
+ for (try_count = 0; try_count < 10; try_count++, ifname = NULL) {
+ nm_auto_close int fd_dir = -1;
+ nm_auto_close int fd_ifindex = -1;
+
+ if (!ifname) {
+ ifname = nmp_utils_if_indextoname(ifindex, ifname_buf);
+ if (!ifname)
+ return -1;
+ }
+
+ nm_assert(nm_utils_ifname_valid_kernel(ifname, NULL));
+
+ if (g_strlcpy(&sysdir[NM_STRLEN(SYS_CLASS_NET)], ifname, IFNAMSIZ) >= IFNAMSIZ)
+ g_return_val_if_reached(-1);
+
+ /* we only retry, if the name changed since previous attempt.
+ * Hence, it is extremely unlikely that this loop runes until the
+ * end of the @try_count. */
+ if (nm_streq(ifname, ifname_buf_last_try))
+ return -1;
+ strcpy(ifname_buf_last_try, ifname);
+
+ fd_dir = open(sysdir, O_DIRECTORY | O_CLOEXEC);
+ if (fd_dir < 0)
+ continue;
+
+ fd_ifindex = openat(fd_dir, "ifindex", O_CLOEXEC);
+ if (fd_ifindex < 0)
+ continue;
+
+ nn = nm_utils_fd_read_loop(fd_ifindex, fd_buf, sizeof(fd_buf) - 2, FALSE);
+ if (nn <= 0)
+ continue;
+ fd_buf[nn] = '\0';
+
+ if (ifindex != (int) _nm_utils_ascii_str_to_int64(fd_buf, 10, 1, G_MAXINT, -1))
+ continue;
+
+ if (out_ifname)
+ strcpy(out_ifname, ifname);
+
+ return nm_steal_fd(&fd_dir);
+ }
+
+ return -1;
+}
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