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Date: Thu, 23 Sep 2021 20:33:51 -0700
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Daniele Palmas <dnlplm@...il.com>, Alex Elder <elder@...aro.org>
Cc: netdev@...r.kernel.org
Subject: [PATCH v2] iplink_rmnet: Allow passing IFLA_RMNET_FLAGS
Extend the rmnet option parser to allow enabling and disabling
IFLA_RMNET_FLAGS using ip link and add the flags to the pint_op to allow
inspecting the current settings.
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---
Changes since v1:
- Landed ABI change to allow setting/clearing individual bits
- Changed parser to take on/off arguments
- Added the new v5 chksum bits
- Made print_flags fancier, with some inspiration from iplink_vlan
ip/iplink_rmnet.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 97 insertions(+)
diff --git a/ip/iplink_rmnet.c b/ip/iplink_rmnet.c
index 1d16440c6900..f629ca9976d9 100644
--- a/ip/iplink_rmnet.c
+++ b/ip/iplink_rmnet.c
@@ -16,6 +16,12 @@ static void print_explain(FILE *f)
{
fprintf(f,
"Usage: ... rmnet mux_id MUXID\n"
+ " [ingress-deaggregation { on | off } ]\n"
+ " [ingress-commands { on | off } ]\n"
+ " [ingress-chksumv4 { on | off } ]\n"
+ " [ingress-chksumv5 { on | off } ]\n"
+ " [egress-chksumv4 { on | off } ]\n"
+ " [egress-chksumv5 { on | off } ]\n"
"\n"
"MUXID := 1-254\n"
);
@@ -26,9 +32,16 @@ static void explain(void)
print_explain(stderr);
}
+static int on_off(const char *msg, const char *arg)
+{
+ fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n", msg, arg);
+ return -1;
+}
+
static int rmnet_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
+ struct ifla_rmnet_flags flags = { };
__u16 mux_id;
while (argc > 0) {
@@ -37,6 +50,60 @@ static int rmnet_parse_opt(struct link_util *lu, int argc, char **argv,
if (get_u16(&mux_id, *argv, 0))
invarg("mux_id is invalid", *argv);
addattr16(n, 1024, IFLA_RMNET_MUX_ID, mux_id);
+ } else if (matches(*argv, "ingress-deaggregation") == 0) {
+ NEXT_ARG();
+ flags.mask |= RMNET_FLAGS_INGRESS_DEAGGREGATION;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= RMNET_FLAGS_INGRESS_DEAGGREGATION;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~RMNET_FLAGS_INGRESS_DEAGGREGATION;
+ else
+ return on_off("ingress-deaggregation", *argv);
+ } else if (matches(*argv, "ingress-commands") == 0) {
+ NEXT_ARG();
+ flags.mask |= RMNET_FLAGS_INGRESS_MAP_COMMANDS;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= RMNET_FLAGS_INGRESS_MAP_COMMANDS;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~RMNET_FLAGS_INGRESS_MAP_COMMANDS;
+ else
+ return on_off("ingress-commands", *argv);
+ } else if (matches(*argv, "ingress-chksumv4") == 0) {
+ NEXT_ARG();
+ flags.mask |= RMNET_FLAGS_INGRESS_MAP_CKSUMV4;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= RMNET_FLAGS_INGRESS_MAP_CKSUMV4;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~RMNET_FLAGS_INGRESS_MAP_CKSUMV4;
+ else
+ return on_off("ingress-chksumv4", *argv);
+ } else if (matches(*argv, "ingress-chksumv5") == 0) {
+ NEXT_ARG();
+ flags.mask |= RMNET_FLAGS_INGRESS_MAP_CKSUMV5;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= RMNET_FLAGS_INGRESS_MAP_CKSUMV5;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~RMNET_FLAGS_INGRESS_MAP_CKSUMV5;
+ else
+ return on_off("ingress-chksumv5", *argv);
+ } else if (matches(*argv, "egress-chksumv4") == 0) {
+ NEXT_ARG();
+ flags.mask |= RMNET_FLAGS_EGRESS_MAP_CKSUMV4;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= RMNET_FLAGS_EGRESS_MAP_CKSUMV4;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~RMNET_FLAGS_EGRESS_MAP_CKSUMV4;
+ else
+ return on_off("egress-chksumv4", *argv);
+ } else if (matches(*argv, "egress-chksumv5") == 0) {
+ NEXT_ARG();
+ flags.mask |= RMNET_FLAGS_EGRESS_MAP_CKSUMV5;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= RMNET_FLAGS_EGRESS_MAP_CKSUMV5;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~RMNET_FLAGS_EGRESS_MAP_CKSUMV5;
+ else
+ return on_off("egress-chksumv5", *argv);
} else if (matches(*argv, "help") == 0) {
explain();
return -1;
@@ -48,11 +115,33 @@ static int rmnet_parse_opt(struct link_util *lu, int argc, char **argv,
argc--, argv++;
}
+ if (flags.mask)
+ addattr_l(n, 1024, IFLA_RMNET_FLAGS, &flags, sizeof(flags));
+
return 0;
}
+static void rmnet_print_flags(FILE *fp, __u32 flags)
+{
+ open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<");
+#define _PF(f, s) if (flags & RMNET_FLAGS_##f) { \
+ flags &= ~RMNET_FLAGS_##f; \
+ print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", s); \
+ }
+ _PF(INGRESS_DEAGGREGATION, "ingress-deaggregation");
+ _PF(INGRESS_MAP_COMMANDS, "ingress-commands");
+ _PF(INGRESS_MAP_CKSUMV4, "ingress-chksumv4");
+ _PF(INGRESS_MAP_CKSUMV5, "ingress-chksumv5");
+ _PF(EGRESS_MAP_CKSUMV4, "egress-chksumv4");
+ _PF(EGRESS_MAP_CKSUMV5, "egress-chksumv5");
+#undef _PF
+ close_json_array(PRINT_ANY, "> ");
+}
+
static void rmnet_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
+ struct ifla_vlan_flags *flags;
+
if (!tb)
return;
@@ -64,6 +153,14 @@ static void rmnet_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
"mux_id",
"mux_id %u ",
rta_getattr_u16(tb[IFLA_RMNET_MUX_ID]));
+
+ if (tb[IFLA_RMNET_FLAGS]) {
+ if (RTA_PAYLOAD(tb[IFLA_RMNET_FLAGS]) < sizeof(*flags))
+ return;
+ flags = RTA_DATA(tb[IFLA_RMNET_FLAGS]);
+
+ rmnet_print_flags(f, flags->flags);
+ }
}
static void rmnet_print_help(struct link_util *lu, int argc, char **argv,
--
2.33.0
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