Adding upstream version 1:6.7.upstream/1%6.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 158 insertions, 0 deletions

diff --git a/netlink/privflags.c b/netlink/privflags.c
new file mode 100644
index 0000000..299ccdc
--- /dev/null
+++ b/netlink/privflags.c
@@ -0,0 +1,158 @@
+/*
+ * privflags.c - netlink implementation of private flags commands
+ *
+ * Implementation of "ethtool --show-priv-flags <dev>" and
+ * "ethtool --set-priv-flags <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "strset.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* PRIVFLAGS_GET */
+
+static void privflags_maxlen_walk_cb(unsigned int idx, const char *name,
+				     bool val __maybe_unused, void *data)
+{
+	unsigned int *maxlen = data;
+	unsigned int len, n;
+
+	if (name)
+		len = strlen(name);
+	else {
+		len = 3; /* strlen("bit") */
+		for (n = idx ?: 1; n; n /= 10)
+			len++; /* plus number of ditigs */
+	}
+	if (len > *maxlen)
+		*maxlen = len;
+}
+
+static void privflags_dump_walk_cb(unsigned int idx, const char *name, bool val,
+				   void *data)
+{
+	unsigned int *maxlen = data;
+	char buff[16];
+
+	if (!name) {
+		snprintf(buff, sizeof(buff) - 1, "bit%u", idx);
+		name = buff;
+	}
+	printf("%-*s: %s\n", *maxlen, name, val ? "on" : "off");
+}
+
+int privflags_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_PRIVFLAGS_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	const struct stringset *flag_names = NULL;
+	struct nl_context *nlctx = data;
+	unsigned int maxlen = 0;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0 || !tb[ETHTOOL_A_PRIVFLAGS_FLAGS])
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_PRIVFLAGS_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (bitset_is_compact(tb[ETHTOOL_A_PRIVFLAGS_FLAGS])) {
+		ret = netlink_init_ethnl2_socket(nlctx);
+		if (ret < 0)
+			return err_ret;
+		flag_names = perdev_stringset(nlctx->devname, ETH_SS_PRIV_FLAGS,
+					      nlctx->ethnl2_socket);
+	}
+
+	ret = walk_bitset(tb[ETHTOOL_A_PRIVFLAGS_FLAGS], flag_names,
+			  privflags_maxlen_walk_cb, &maxlen);
+	if (ret < 0)
+		return err_ret;
+	if (silent)
+		putchar('\n');
+	printf("Private flags for %s:\n", nlctx->devname);
+	ret = walk_bitset(tb[ETHTOOL_A_PRIVFLAGS_FLAGS], flag_names,
+			  privflags_dump_walk_cb, &maxlen);
+	return (ret < 0) ? err_ret : MNL_CB_OK;
+}
+
+int nl_gprivflags(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_PRIVFLAGS_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_PRIVFLAGS_GET,
+				      ETHTOOL_A_PRIVFLAGS_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, privflags_reply_cb);
+}
+
+/* PRIVFLAGS_SET */
+
+static const struct bitset_parser_data privflags_parser_data = {
+	.force_hex	= false,
+	.no_mask	= false,
+};
+
+int nl_sprivflags(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_PRIVFLAGS_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "--set-priv-flags";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_PRIVFLAGS_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_PRIVFLAGS_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parse_bitset(nlctx, ETHTOOL_A_PRIVFLAGS_FLAGS,
+			      &privflags_parser_data, msgbuff, NULL);
+	if (ret < 0)
+		return -EINVAL;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 2;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 1;
+}