Implement "ethtool -L <dev> ..." subcommand to set network device channel
counts using ETHTOOL_MSG_CHANNELS_SET netlink message. These are
traditionally set using ETHTOOL_SCHANNELS ioctl request.
Signed-off-by: Michal Kubecek <mkube...@suse.cz>
---
ethtool.c | 1 +
netlink/channels.c | 72 +++++++++++++++++++++++++++++++++++++++++++++-
netlink/extapi.h | 2 ++
3 files changed, 74 insertions(+), 1 deletion(-)
diff --git a/ethtool.c b/ethtool.c
index eff97f4dfe70..cf888e08b5a4 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -5371,6 +5371,7 @@ static const struct option args[] = {
{
.opts = "-L|--set-channels",
.func = do_schannels,
+ .nlfunc = nl_schannels,
.help = "Set Channels",
.xhelp = " [ rx N ]\n"
" [ tx N ]\n"
diff --git a/netlink/channels.c b/netlink/channels.c
index ddea17b4d670..c6002ceeb121 100644
--- a/netlink/channels.c
+++ b/netlink/channels.c
@@ -1,7 +1,7 @@
/*
* channels.c - netlink implementation of channel commands
*
- * Implementation of "ethtool -l <dev>"
+ * Implementation of "ethtool -l <dev>" and "ethtool -L <dev> ..."
*/
#include <errno.h>
@@ -11,6 +11,7 @@
#include "../internal.h"
#include "../common.h"
#include "netlink.h"
+#include "parser.h"
/* CHANNELS_GET */
@@ -69,3 +70,72 @@ int nl_gchannels(struct cmd_context *ctx)
return ret;
return nlsock_send_get_request(nlsk, channels_reply_cb);
}
+
+/* CHANNELS_SET */
+
+static const struct param_parser schannels_params[] = {
+ {
+ .arg = "rx",
+ .type = ETHTOOL_A_CHANNELS_RX_COUNT,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "tx",
+ .type = ETHTOOL_A_CHANNELS_TX_COUNT,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "other",
+ .type = ETHTOOL_A_CHANNELS_OTHER_COUNT,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "combined",
+ .type = ETHTOOL_A_CHANNELS_COMBINED_COUNT,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {}
+};
+
+int nl_schannels(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_CHANNELS_SET, false))
+ return -EOPNOTSUPP;
+
+ nlctx->cmd = "-L";
+ 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_CHANNELS_SET,
+ NLM_F_REQUEST | NLM_F_ACK);
+ if (ret < 0)
+ return 2;
+ if (ethnla_fill_header(msgbuff, ETHTOOL_A_CHANNELS_HEADER,
+ ctx->devname, 0))
+ return -EMSGSIZE;
+
+ ret = nl_parser(nlctx, schannels_params, NULL, PARSER_GROUP_NONE);
+ if (ret < 0)
+ return 1;
+
+ ret = nlsock_sendmsg(nlsk, NULL);
+ if (ret < 0)
+ return 1;
+ ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+ if (ret == 0)
+ return 0;
+ else
+ return nlctx->exit_code ?: 1;
+}
diff --git a/netlink/extapi.h b/netlink/extapi.h
index 9438dcd3aa0f..9cea57ac040a 100644
--- a/netlink/extapi.h
+++ b/netlink/extapi.h
@@ -27,6 +27,7 @@ int nl_sprivflags(struct cmd_context *ctx);
int nl_gring(struct cmd_context *ctx);
int nl_sring(struct cmd_context *ctx);
int nl_gchannels(struct cmd_context *ctx);
+int nl_schannels(struct cmd_context *ctx);
int nl_monitor(struct cmd_context *ctx);
void nl_monitor_usage(void);
@@ -58,6 +59,7 @@ static inline void nl_monitor_usage(void)
#define nl_gring NULL
#define nl_sring NULL
#define nl_gchannels NULL
+#define nl_schannels NULL
#endif /* ETHTOOL_ENABLE_NETLINK */
--
2.26.2
