iw: add support to set/get retry limit
Show the retry limit in phy details and also configure the
retry limit.
Signed-off-by: Ujjal Roy <royujjal@gmail.com>
diff --git a/phy.c b/phy.c
index 68f40f6..517d203 100644
--- a/phy.c
+++ b/phy.c
@@ -232,6 +232,70 @@
NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_rts,
"Set rts threshold.");
+static int handle_retry(struct nl80211_state *state,
+ struct nl_cb *cb, struct nl_msg *msg,
+ int argc, char **argv, enum id_input id)
+{
+ unsigned int retry_short = 0, retry_long = 0;
+ bool have_retry_s = false, have_retry_l = false;
+ int i;
+ enum {
+ S_NONE,
+ S_SHORT,
+ S_LONG,
+ } parser_state = S_NONE;
+
+ if (!argc || (argc != 2 && argc != 4))
+ return 1;
+
+ for (i = 0; i < argc; i++) {
+ char *end;
+ unsigned int tmpul;
+
+ if (strcmp(argv[i], "short") == 0) {
+ if (have_retry_s)
+ return 1;
+ parser_state = S_SHORT;
+ have_retry_s = true;
+ } else if (strcmp(argv[i], "long") == 0) {
+ if (have_retry_l)
+ return 1;
+ parser_state = S_LONG;
+ have_retry_l = true;
+ } else {
+ tmpul = strtoul(argv[i], &end, 10);
+ if (*end != '\0')
+ return 1;
+ if (!tmpul || tmpul > 255)
+ return -EINVAL;
+ switch (parser_state) {
+ case S_SHORT:
+ retry_short = tmpul;
+ break;
+ case S_LONG:
+ retry_long = tmpul;
+ break;
+ default:
+ return 1;
+ }
+ }
+ }
+
+ if (!have_retry_s && !have_retry_l)
+ return 1;
+ if (have_retry_s)
+ NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, retry_short);
+ if (have_retry_l)
+ NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, retry_long);
+
+ return 0;
+ nla_put_failure:
+ return -ENOBUFS;
+}
+COMMAND(set, retry, "[short <limit>] [long <limit>]",
+ NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_retry,
+ "Set retry limit.");
+
static int handle_netns(struct nl80211_state *state,
struct nl_cb *cb,
struct nl_msg *msg,