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devlink: Add support for hot reload 

Add support for hot reload. It should be used in order for resource
updates to take place.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Arkadi Sharshevsky 2018-02-14 10:55:19 +02:00 committed by Stephen Hemminger
parent 8cd6440958
commit 06dd94f952
1 changed files with 29 additions and 0 deletions
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29
devlink/devlink.c
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@ -1179,6 +1179,7 @@ static void cmd_dev_help(void)
pr_err(" [ inline-mode { none | link | network | transport } ]\n"); pr_err(" [ inline-mode { none | link | network | transport } ]\n");
pr_err(" [ encap { disable | enable } ]\n"); pr_err(" [ encap { disable | enable } ]\n");
pr_err(" devlink dev eswitch show DEV\n"); pr_err(" devlink dev eswitch show DEV\n");
pr_err(" devlink dev reload DEV\n");
} }
static bool cmp_arr_last_handle(struct dl *dl, const char *bus_name, static bool cmp_arr_last_handle(struct dl *dl, const char *bus_name,
@ -1620,6 +1621,31 @@ static int cmd_dev_show(struct dl *dl)
return err; return err;
} }
static void cmd_dev_reload_help(void)
{
pr_err("Usage: devlink dev reload [ DEV ]\n");
}
static int cmd_dev_reload(struct dl *dl)
{
struct nlmsghdr *nlh;
int err;
if (dl_argv_match(dl, "help") || dl_no_arg(dl)) {
cmd_dev_reload_help();
return 0;
}
nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_RELOAD,
NLM_F_REQUEST | NLM_F_ACK);
err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE, 0);
if (err)
return err;
return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL);
}
static int cmd_dev(struct dl *dl) static int cmd_dev(struct dl *dl)
{ {
if (dl_argv_match(dl, "help")) { if (dl_argv_match(dl, "help")) {
@ -1632,6 +1658,9 @@ static int cmd_dev(struct dl *dl)
} else if (dl_argv_match(dl, "eswitch")) { } else if (dl_argv_match(dl, "eswitch")) {
dl_arg_inc(dl); dl_arg_inc(dl);
return cmd_dev_eswitch(dl); return cmd_dev_eswitch(dl);
} else if (dl_argv_match(dl, "reload")) {
dl_arg_inc(dl);
return cmd_dev_reload(dl);
} }
pr_err("Command \"%s\" not found\n", dl_argv(dl)); pr_err("Command \"%s\" not found\n", dl_argv(dl));
return -ENOENT; return -ENOENT;